Boot Size 25.5 cm: S or M? One Size Can Change Your Ride

February 3, 2026

Q1. First, please introduce yourself and tell us about your usual riding style.

Taniguchi: I work mainly as a snowboard instructor at Hachi, Hachikita, Hyounosen, and Ojiro in northern Hyogo. I teach a wide range of riders, from beginners to advanced, covering everything from basic snowboarding to carving.
I also compete in technical contests, banked slalom, and GS/SL races, and I’m constantly working to improve my riding skills.

Amekai: I’m Shutaro Amekai, riding mainly in northern Kanto! I originally focused on park and halfpipe, but recently I’ve really gotten into powder and natural terrain riding. These days I enjoy riding all styles—it’s all fun!

Nakatani: I’m originally from Hokkaido, but after visiting Whistler, Canada for filming, I fell in love with the place and moved here—this is my eighth year now. In Whistler, I mainly create content on YouTube and social media, and I also work as a mountain guide for visitors from Japan. I love freeriding, and whether it’s carving, powder, or natural terrain, if there’s something to play with, I can’t resist ^_^

Q2. What is your usual boot size, which SP model and size do you use, and why did you choose that size?

Taniguchi: I wear head Quantos boots in 25.5 cm and use the SP TEAM bindings in size S.
I chose the S size because I wanted to maximize the fit between my boots and bindings. A tighter setup allows even the smallest movements to be transmitted directly to the board, minimizing power loss.

Amekai: My boots are head TEAM BOA in 25.5 cm, and I use the CORE bindings.
I usually ride size M, but when I want more speed or I’m riding halfpipe, I sometimes switch to size S.

Nakatani: I use head TEAM BOA boots in 25.0 cm and SP CORE bindings in size S.
When I previously rode 25.5 cm boots, I used size M, but with my current boot size, S feels like the perfect match.

Q3. How does the fit and hold feel in actual riding?

(If you’ve tried different sizes before, please tell us about the differences.)

Taniguchi: I’ve used size M in the past, so I clearly understand the differences.

Impression of size S: The fit and hold I’m looking for are perfect with size S. Because it’s a tight setup, there’s zero power loss. It’s ideal for competition riding or situations where response is critical.

Differences compared to size M: Size M has a larger baseplate, which provides stability at high speeds by allowing power to be distributed across the entire sole of the foot.
There’s a bit of “play” between the boot and binding, which prevents it from feeling overly sensitive. For powder and cruising, that actually makes it very comfortable.
My impression is: S offers sharp, precise control, while M provides stability and a more enveloping feel.

Amekai: I choose S when I want fast response.
When I want a looser feel for powder or terrain riding, I go with M. I switch sizes depending on snow conditions and riding style.

Nakatani: Size M offers a wider range of motion and allows the ankles to move more freely.
Size S has quicker response and really shines on steep terrain, icy slopes, and uneven snow like you often find in Whistler.
I also like that it helps reduce toe and heel drag when riding narrower boards.

Q4. Any advice for riders who are unsure which size to choose?

Taniguchi: My impression is that S is best for competition-focused or response-oriented riding, while M is better for stability and relaxed riding. I think it’s important to choose based on what kind of riding you want to pursue.

Amekai: I recommend choosing based on your riding style.
If you want a loose, stylish feel, go with M for freedom of movement. If you want quick response and a solid feel, S is the way to go!

Nakatani: You should also consider the balance with your board’s waist width.
Since my boot size is slightly larger for a woman (25.0–25.5 cm), I always check for drag when choosing a narrower board.

Q5. Finally, please share a message about the joy of finding the right size for yourself.

Taniguchi: The most important thing when choosing a size is being clear about how you want to ride. Once you select the size and model that match your goals, all that’s left is to trust your gear and ride. Bringing out the full potential of your equipment expands the joy of snowboarding even more.

Amekai: One of the great things about SP is how finely you can adjust the setup, making it easy to switch depending on the situation. I also love the heel-cup-less design—it makes expressing your style much easier!

Nakatani: Size selection is different for everyone, but it’s best to choose while considering your riding style and board compatibility. SP’s one-touch entry means you won’t miss a single powder moment (laughs).
Riding with gear that makes you think, “This is it!” really boosts motivation too.

Conclusion

S or M—it’s not just a matter of size, but a factor that can shape your entire riding style.
Do you prioritize response, or freedom of movement?
By understanding the feel you’re looking for, you’ll be able to experience the true performance of SP Bindings.