

Bont Size Chart - Eclipse Boot
eclipse
How to measure your feet
Skate boots are not like your average shoe. For maximum control, your boots need to fit like a second skin. That is why Bont boot sizing is NOT the same as your US shoe size or other skate brand sizing.
Wear the type of socks you'll wear with your boots. Distribute weight evenly before measuring.

STEP 1
On a hard surface, tape a piece of blank paper to the floor. Stand up straight with your foot on the paper. Your heel should be barely touching the wall or not at all. DO NOT push heel into the wall as it will produce incorrect length measurements.

STEP 2
Mark the longest part of your foot (heel-to-toe length) and widest part of your foot on the paper with a pen or pencil. If your heel is away from the wall trace around your whole foot. Make sure your pen is held vertically, not at an angle. Repeat with the other foot, as the right and left foot may be different sizes.

STEP 3
Use a ruler to measure the heel-to-toe length and width measurement for each foot. Take these measurements and input them into the size calculator or compare them to the size chart below.
Use the calculator and chart below to find your correct Bont size for the Eclipse Boot. Input your measurements in millimeters for the most accurate fit.
Looking for a different boot model?
- Slipstream and Vaypor Boots – Size Chart and Calculator (NEW)
- Parkstar, Prostar and Quadstar Boots – Size Chart and Calculator
- Inline and Roller Skate Boots (All Other Models) – Size Chart and Calculator
Size Calculator
Enter your foot length and width in millimetres and press "Enter" to get a recommended Bont size with width classification.
Note: The size calculator is a guide only and may not be suitable for all foot shapes. Width measurement helps determine if you need standard, double-wide oe custom fitting.
Left Foot
-
Heel to longest toe
-
Widest part of foot
- Enter measurements
- Not specified
Right Foot
-
Heel to longest toe
-
Widest part of foot
- Enter measurements
- Not specified
Size Chart
If you have narrow or wide feet, we recommend using the size calculator above for a more tailored suggestion. The calculator will automatically determine your width category and adjust sizing recommendations accordingly.
FOOT LENGTH (MM) | SIZE | STANDARD WIDTH (MM) | WIDE WIDTH (MM) |
---|---|---|---|
175 - 179 | 180 | 65 - 69 | 69 - 73 |
180 - 184 | 185 | 68 - 72 | 72 - 76 |
185 - 189 | 190 | 69 - 73 | 73 - 77 |
190 - 194 | 195 | 70 - 74 | 74 - 78 |
195 - 199 | 200 | 71 - 75 | 75 - 79 |
200 - 204 | 205 | 74 - 78 | 78 - 82 |
205 - 209 | 210 | 76 - 85 | 80 - 89 |
210 - 213 | 215 | 77 - 86 | 81 - 90 |
214 - 219 | 220 | 79 - 88 | 83 - 92 |
220 - 223 | 225 | 80 - 89 | 84 - 93 |
224 - 229 | 230 | 82 - 91 | 86 - 95 |
230 - 234 | 235 | 84 - 94 | 88 - 98 |
234 - 239 | 240 | 85 - 95 | 89 - 99 |
240 - 244 | 245 | 87 - 96 | 91 - 100 |
245 - 250 | 250 | 88 - 98 | 92 - 102 |
251 - 254 | 255 | 89 - 99 | 93 - 103 |
255 - 260 | 260 | 90 - 101 | 94 - 105 |
261 - 264 | 265 | 92 - 102 | 96 - 106 |
265 - 270 | 270 | 93 - 103 | 97 - 107 |
271 - 274 | 275 | 95 - 105 | 99 - 109 |
275 - 280 | 280 | 97 - 108 | 101 - 112 |
281 - 284 | 285 | 98 - 109 | 102 - 113 |
285 - 290 | 290 | 99 - 110 | 103 - 114 |
291 - 294 | 295 | 100 - 112 | 104 - 116 |
295 - 300 | 300 | 102 - 113 | 106 - 117 |
301 - 304 | 305 | 104 - 116 | 108 - 118 |
305 - 310 | 310 | 105 - 117 | 109 - 119 |
311 - 314 | 315 | 107 - 119 | 111 - 123 |
*This product is made to order and takes approximately 2 weeks to produce.
Slipstream Inline Boot
All the performance you loved in the BNT, now with even greater stiffness, precision, and refinement.
The Slipstream is the latest chapter in a 50-year legacy of innovation that began with the Hustler, evolving through the Psycho, Maxi Lunge, Team Bont, Black Widow, Pyrotechnics, ZX5, Z, and BNT. Every generation has brought improvements, and the Slipstream is the culmination of all that experience. This is not just a boot — it’s half a century of racing evolution.
The Slipstream retains everything that made the BNT a world-class boot: a heat moldable, ultra-lightweight build, and performance fit trusted by the world’s best. Constructed from 100% carbon fiber from Japan, it is stiffer, lighter, and more responsive than ever.
New and Enhanced Features:
-New power ridges along the base and up the sides increase rigidity and carbon stiffness for enhanced power transfer
-Upgraded epoxy resin is 40% stiffer than the BNT’s, delivering sharper responsiveness and longer-lasting performance with less deformation (but slightly less moldable)
-All-new last delivers a fit that feels more like a custom boot than any stock model we've ever produced
-Refined custom sanding process for tighter, more precise fitting, especially in custom orders
-Premium outer skin available only in black or white for an elite finish
-Anti-stretch lace cover with a notch to hold your knot and keep lace tension locked in
-New buckle design for better foot lockdown and security
-Silver-thread carbon weave adds a sleek, high-performance visual edge
-Aluminium mounting blocks with gold-colored anodized holes, a new construction method that keeps weight low without compromising performance
-Ventilated tongue with Velcro to hold it in place, offering cooling airflow and padded comfort to prevent lace bite
-Waxed laces with minimal stretch for better tension retention and foot stability
Every detail has been considered, every component re-engineered — the Slipstream is built for serious competitors who demand the best.
Get ready for the Slipstream. 50 years in the making.
Upgraded epoxy resin is 40% stiffer than the BNT’s, delivering sharper responsiveness and longer-lasting performance with less deformation
Silver-thread carbon weave adds a sleek, high-performance visual edge
Air ventilation throughout the boot.
Aluminium mounting blocks with gold-colored anodized holes, a new construction method that keeps weight low without compromising performance
All-new boot shape delivers a fit that feels more like a custom boot than any stock model we've ever produced
Q&A
Q: What is the difference between the Bont Eclipse and Slipstream?
A: The Eclipse is made on a slightly wider last with slightly softer padding, designed more as an entry-level boot. The Slipstream is intended for professional-level skaters. The Eclipse features a sliding frame mounting system, whereas the Slipstream uses exposed mounting blocks. The Slipstream is less heat moldable than the Eclipse and is a less forgiving boot with harder padding that offers better power transfer. It's built on a narrower last for that tight, custom boot feel. The Slipstream also uses more premium materials throughout.
Q: What is the difference between the Slipstream and Vaypor?
A: The Slipstream is a pro-level boot built to win world titles. But the Vaypor takes everything even further with a no-expense-spared approach, from custom buckles to specially hand-laid carbon fiber and the most premium outer skin available. The Vaypor has no peer. The Slipstream will outperform any boot on the market, except the Vaypor.
Team Testing Inline
Our professional inline speed skating team are some of the best skaters in the World. They love to give us feedback! From the little things like the placement of the buckle to trialing the latest materials, they help Bont create products that not only look good but perform at the elite international level.
Resin Development
Here at Bont, we have been conducting resin development for over 45 years. We formulated a resin that is super stiff, yet moldable at low temperatures. Furthermore, fast cure time is critical for our requirements. Additionally, we are one of the only boot manufacturers who develop their resins in-house.
Our resin softens at just 60°C (140°F), which is the lowest in the industry. As such, you can reheat our resin as many times as required. That is to say; you can heat your boot and easily mold it to your foot. Following the heating, allow your boot to set and cool for your custom mold.
Epoxy or polyepoxide is a thermosetting epoxide polymer that cures when mixed with a catalyzing agent or hardener. We control Polymerization, called curing, through temperature and the choice of resin and hardener compounds. The process can take minutes to hours.
The amount of hardener added to the resin is critically dependent on the temperature of the air and the amount of humidity. For this reason, we have a computer that mixes the resin and hardener. This computer dispenses the resin after measuring the air temperature and humidity.
Most manufacturers use a process known in the industry as pre-preg. A process that involves “pre-impregnating” resin into the carbon fiber.
Pre-preg, in virtually all applications, the carbon fiber manufacturer chooses the resin. Its a one shoe fits all kind of deal. The boot manufacturer has no way of altering the resin customize heat moldability requirements of modern boots. For this reason, many competitors require high temperatures to make their boots heat moldable. Often the boot moldability is limited, even at these high temperatures.
Light Weight
Liner
We reviewed hundreds of different types of Liners before choosing a suitable product to use in our Bont boots. Bont uses Microfiber, Suede-Like, and Durolite as our liners. Ensuring we are working towards sustainability and animal welfare, Bont is using Vegan-friendly products. In short, our liners are light-weight, durable, fight odor, and do not easily break down with sweat.
Last Design
What is a Last? The Last is a plastic replica of a foot which the boot is built around.
Here at Bont, we have been perfecting our Lasts since 1975 and the process is ongoing. Unlike the standard Last many companies use, Bont continually focuses on developing and improving our Lasts so that your boots fit right out of the box.
Footbed

Foam Padding
Most skate boots are made with sponge foam padding. It’s light, it’s cheap and it doesn't crush down. But what it does do is absorb water when it gets wet. So, if your feet sweat, you skate through a puddle or if it starts raining, your boots start absorbing the water and start to weigh you down. This type of foam is known in the industry as open cell foam, because the cells are porous. The foam used in making a Bont boot is a high quality closed cell memory foam which does not absorb water. Therefore, you do not need to worry about your boot absorbing water while you skate.
Anti Stretch
Our proprietary Anti-Stretch material shares similar strength characteristics with Kevlar. We add this material between the outer layer and the skin, which assists prevent the boot from stretching.
To ensure the material does not move, we stitch it to the outer layer and bond it to the liner. In short, this Anti-Stretch material becomes a part of the boots’ structure. As a result, Bont boots do not stretch out as much as competitors’ boots.
Carbon Fiber
Ever wondered what Carbon Fiber is? For instance, is it Carbon Fiber or Carbon Fibre? To clarify, Fibre and Fiber have the same meaning. Fibre is the British English spelling, while Fiber is the US English spelling.
Carbon Fiber is a revolutionary material. It is as strong as steel with a fraction of the weight.
Carbon Fiber consists of mainly bonded carbon atoms. For example, the fibers’ long axis consists of particles that have been bonded together and aligned. Following this, a yarn is created by twisting several thousand of the threads together. Finally, a piece of fabric is woven from the yarn.
Here at Bont, we have been producing carbon-based boots since 1989. Above all and most importantly, we source our carbon exclusively from the world’s number one carbon manufacturer, Toray of Japan.

3K PLAIN
3k plain is a tightly woven carbon, which is commonly used in the Aircraft industry and Bont shoes.

UNIDIRECTIONAL
An extremely stiff, lightweight, and adaptive carbon fiber. We use Unidirectional Carbon in our boots, which allows us to lay the carbon in a direction we choose. Therefore provide extremely stiff and lightweight boots. For example the Vaypor.

12K PLAIN
A cheaper form of carbon. 12K Plain carbon is not as strong as 3k Plain carbon, which results in the price being around 20% cheaper.
INDUSTRY MISREPRESENTATION
In the old days, if you purchased a plastic or nylon based shoe, you knew what you were getting. However, nowadays, with all of the expensive modern materials, it is getting harder to identify what is in your product. As a result, you may not be getting what you thought you purchased.
Here are some handy tips on different ways manufacturers use materials. That is to say, use these points for consideration in your next purchase.
One layer of carbon
Often, manufacturers misrepresent carbon shoes. For example, the shoe base can be an injection-molded plastic, or nylon, or fiberglass base and usually covered with a single layer of carbon fiber. Unfortunately, when you buy a shoe, and you see that it has a carbon base, the chances are that only the outer layer is carbon.
Unidirectional carbon
A variety of shoes are marketed as Unidirectional carbon. However, many of these shoes use injection molded carbon in the plastic and call this Unidirectional Carbon. Consequently, we feel this is a misuse of the terminology. For example, here at Bont, Unidirectional Carbon means carbon fiber, where all of the strands travel in the same direction.
Silver fiberglass
Many shoes use a plastic injection molded base with some carbon particles in it. Also, these shoes typically have a single layer of silver fiberglass for the outer layer. As such, manufacturers advertise ‘carbon fiber’ for these shoes. They are allowed to use this term as there is carbon dust in the plastic mold under the outer fiberglass layer. However, the fiberglass woven material on the outside is not carbon. Above all, remember Carbon Fiber is always black.
100% composite
What is 100% composite? This term almost covers anything. Therefore, the question you need to ask when considering a composite boot is, A composite of what? In short, a composite boot is usually a nylon fiberglass composite.
Monocoque
A Monocoque shoe is where the carbon is directly laminated onto the liner. Unfortunately, some companies are calling a carbon shell with an integrated heel cup a Monocoque shoe; however, it isn’t.
In summary, be aware of companies jumping on the bandwagon of carbon technology and using keywords to promote their product. Above all, do your research and be mindful of what you are purchasing. We hope this helps your decision in your carbon boot purchase.
Upper
The Bont Upper, the upper section of the boot, is lightweight, glued and sewn onto the boot. We punch holes by hand through the Upper and the Liner for ventilation. Buckles and straps are attached to ensure your foot is pulled down and pushed to the back. Finally, we clean the excess glue off, and the boot is ready for skating. To be deemed ready for action, the boot is required to pass sixteen stages of independent quality control. As a result, we provide you with the best strength to weight ratio on the market.
Heat Molding
Bont manufactures the most heat moldable boots available in the market. Improved continuously for over 45 years, Bont proprietary resin is extremely stiff that becomes pliable at relatively low temperatures.
Bont boots are moldable over the entire base, unlike other skates that are moldable only in select locations. Importantly, this provides skaters with the most anatomically designed boot on the market today. Additionally, skaters with Bont boots can fine-tune the fit of the whole boot to get that customized fit.
Head to our Heat Molding page for instructions on how to heat mold your inline skate boots, carbon roller skate boots or your fiberglass roller skate boots.
Ventilation
Scientists have proven that cooler feet can boost performance. This model inline skate boot has ventilation in the tongue and on top of your toes. This helps circulate air and cool your feet.
Lace Cover
Most of our Bont boot models have a lace cover as the lace cover gives you extra support, whilst neatly tucking your laces away.
Tendon Pillow
The tendon pillow in Bont inline skates refers to the padding that pads around the Achilles tendon. It secures the foot in place to prevent heel slippage for the perfect fit.
Micro Adjustable Buckle
The Bont micro-adjustable buckle provides you with an additional level of tightness. Easy to adjust when wearing with a simple bend down to tighten, even during a race if need be.
Eyelets
Bont eyelets have a large head, which spreads the pressure over a larger area to help overcome any discomfort. On the other hand, small eyelets can put pressure on a small area and can cause pain.