Skate Sizing

Choosing the correct skate size is a very important task and usually even more important than choosing the skate model! All high-quality skates will have a break-in period and will adjust over time to the skater’s feet. Some will take longer and some shorter, but while you want to have a comfortable ride you do not want to have the skates too loose… The correct fit will determine much more than just the comfort - it will define how much control, power transfer, and agility you would have while skating, and even would affect the balance.

Please remember that the skates will feel the worst when you try them for the first time and from there the fit will only improve!!!

While various skating styles and skaters themselves have different preferences, below are the general instructions on how to determine the perfect fit for your new skates.


Most inline and roller skates are manufactured and sold in European sizes (EU), so your US / UK sizing could be a wrong idea to use due to conversion inaccuracies. Furthermore, even if you know your European sizing, every shoe and skate manufacturer has a slightly different fit and sizing, therefore your standard shoe size might not assure a perfect fit but that is the best way to estimate your skate size. In any case, the inline and roller skate size should be either equal to your shoe size or no more than one size up or down from it.

Based on our experience, the best way to determine your skate size is to take a look at your current pair of skates and/or running shoe labels for MM / CM / MP / MONDO numbers. These numbers are indicating the maximum foot length that will fit into the pair, while MM shows the measurement in millimeters and CM/MP/MONDO is centimeters. Having these numbers along with the EU sizes from these shoes, you will be able to determine the size of the skates that you need by looking into the brand or model-specific sizing chart (usually located in the Sizing tab under the skates photos or as one of the product photos). If cannot be located, please send us an inquiry and we gladly will help you out!

Important: Many shops are recommending measuring your feet to determine your skate size, but we have found that this leads to too many mistakes and do not recommend that. If after following the instructions above you are finding yourself stuck in between two sizes, you could measure your feet according to the directions below. In this case, your shoe size is still the defining factor, so if the measurement is showing more than one size up or down, something is wrong with the measurement! If your foot is wider than average, please go one size up. Usually, Seba, FR, and Adapt skates fit wider than average, Powerslide and K2 average, Flying Eagle and Rollerblade average to narrow...

Still, want to measure your feet? Here is how to do it:

You’ll need paper, a pen, a flat wall, and, if possible, a buddy to help. It’s best to measure your feet later in the day after you have been on them for a few hours to account for swelling.
Find a hard floor with a flat wall. Tape a piece of paper down so that it touches the wall. Stand on the paper in bare feet, with your heel just touching the wall.
Have your friend take a book and place it so that it just touches the tip of your longest toe. Mark the spot where the book meets your toe. Do this with both feet and use the larger of the two measurements. Measure your foot length in millimeters, if possible. If you measure in inches, be sure to measure in 16ths of an inch.
Choose your size from the manufacturer's sizing chart. The “Max Foot Length” is the longest foot measurement that will fit into that size. The US Men’s column lists the sizes found on the box.

Here is a great sizing video courtesy of Powerslide:



Our sizing advice is targeted at freestyle or dance skater who wants a very snug fit in their skate to enjoy maximum control. Our instructions will give a fit that prioritizes control over comfort. If comfort is a higher priority, or if you have an especially wide or oddly shaped foot, you may do well to choose a slightly larger size. If you are near the boundary between two sizes, you would probably be better off going with the larger size in case you prefer comfort over control.

Notes about Width
In general, the Plastic Boot skates with a built-in liner have a narrower fit through the foot, while the boots with a removable liner and soft boots have a somewhat wider fit. The Carbon is a bit wider through the toe box than the plastic boot skates because the carbon fiber boot has less flex. As a rule of thumb, skates with built-in liners and "regular" liners will have less adjustment room.

We gladly will guide you in case you have any further questions. Email us at [email protected]

To help you better, please include all the sizing information off one or two pairs of skates or running shoes that you currently have including EU/US/UK/MP/CM/MM/MONDO, etc...

SEBA TriX Carbon 80 Inline Skates
SEBA TriX Carbon 80 Inline Skates
USD$630.00 USD$498.79 Select options

SEBA TriX Carbon 80 Inline Skates



SEBA TriX Carbon 80 Inline Skates are a well-known Pro Model from Seba and the carbon version of a very successful Trix2 skate. These skates feature a carbon shell, a unique triangle plastic cuff, and a built-in liner. This combination provides excellent support with optimal front and back motion, close fit, and great energy transfer.

SEBA TriX Carbon 80 Inline Skates work the best for skaters seeking a bit more freedom in the cuff area compared to the regular plastic cuff skates and is usually the go-to model for skaters used to speed or hockey skates.

(3 customer reviews)

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Size Guide

SEBA TriX Carbon 80 Inline Skates are Perfect for Freestyle, Freeride, and Artistic.

Please note: the frames on these skates are rockered. These skates come with 4x80mm wheels installed for a rockered and an extra set of 4 wheels in 76mm to have a flat setup on the same frames!

  • Shell: Carbon + Fiber Glass
  • Closures: Top and Middle Adjustable Spider Buckles, Toe Velcro Strap, and Laces
  • Cuff: 3-Point Way Cuff
  • Liners: Integrated
  • Frame: SEBA Deluxe V2 Rockered 231mm 4×76 (36-39EU), 243mm 4×80 (40-47EU)
  • Frame Mount: 165mm
  • Wheels: HL Black 85A (34-39EU 76mm, 40-47EU 80mm)
  • Bearings: Twincam ILQ9 Pro
  • Brake: Not Included
  • Custom Color Kits: High or Trix custom color kits

Additional information

Weight4.7 kg

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Skating Style



Designed for

Boot Durability

Boots Comfort

Boots Control

Boots Fit

Setup Speed

Recommended Skill Level

Boot Ventilation



Wheel Size (mm)


Seba Sizing Chart

Based on our experience, all of the SEBA skates are wider than average (excluding TriX2-W) and running true to the shoe size. These are the skates that work the best for people with wider feet.

Please note: your shoe size is the defining factor! Almost never, the size of the inline skates will be smaller than your shoe size. If your foot is very wide, please go one size up to your shoe size. SEBA HL Carbon Pro Trix MarathonIf you want to use the foot length information to narrow the sizing down, the best way is to get that information from your running/sports shoes sizing label. Almost always they will have one of the following: MP/MONDO/CM – length in centimeters or MM – length in millimeters.

  • The US shoe sizes mentioned in the sizing table are US men.

3 reviews for SEBA TriX Carbon 80 Inline Skates

  1. Eric – Wickedsick (verified owner)

    Simply Amazing

    Simply amazing. After 16 years of not being on skates and receiving them today, I took them out for a 3 hour ride. My feet felt so comfortable in the boot, the ratchet latch is a very cool feature. The roll was smooth and fluent, I couldn’t speak more highly about this skate. I love them, an ProSkatersPlace took care of any and all questions I had to ask. Awesome customer service, I will 110% be continuing my future purchases from this place.

    P.S. I live in Arizona, The skates took exactly 1 week standard shipping to get here. Just a heads up about how long it may take before you get your skates if you live on the west coast in the USA. Which I feel is pretty quick for where they were being shipped from.
    Thanks again ProSkatersPlace!!

  2. David (verified owner)

    Expectations Exceeded

    I would describe myself as an intermediate/advanced freeride city skater. I haven’t skated in many years and wanted to get back into it for fun and add some variety to my fitness routine. What initially drew me to this skate was the style and design – absolutely beautiful skate in all black and I love the adjustability and customization options.

    The fit was pretty good straight out of the box. I am a shoe size 10-10.5 and ordered the 10.5. I have really wide feet and the fit in the front was perfect but a little loose in the heel area so I ordered a pair of EZeeFit ankle booties to fill the space. After a few sessions of riding the boot now feels perfectly conformed. (There are holes to lace the boot all the way to the top but the cuff makes it nearly impossible to do so)

    I upgraded my frame to the 255mm Deluxe and 84mm wheel. Super fast and still maneuverable. My only complaint is the 2nd wheel on BOTH frames has slight wheel wobble. I do not know if this is intentional, frame defect, wheel defect, bearings, spacers or what… kind of annoying but I can live with it.

    Price is kinda high but I believe you get what you pay for and I expect these to last a very long time. I’m looking forward to trying these out with different frame/wheel combos to see what this bad boy can do!

  3. Nathan McGraw (verified owner)

    I’m a size 11 US and got a 46 UK and they fit nicely. I think once the liner forms around my foot they’ll be perfect. They’re pretty nice I almost don’t want to ride them now. Only thing I worry about is the plastic straps seem kind of frail and small. The way I skate I could see them breaking after a while.

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