ONE Blades Frame Sizing Guide

ONE Blades frames are sized using boot sole length in millimeters (mm).

This is the same measurement used by most figure skate boot manufacturers.

Do not choose your size based on shoe size alone.

Step 1. Measure your boot

• Measure the sole length of your skating boot in millimeters

• Or check the size label inside your boot or on the sole if it lists mm

• If in doubt, measure heel to toe on the outsole

This number is what matters.

Step 2. Choose the correct frame

Each frame size supports boots up to 20 mm longer than the frame length.

This allows natural progression without compromising balance or control.

Frame Size Coverage

210 mm frame

Fits boots: 210–230 mm

Typical skaters: young skaters, approx. 6–8 years old

230 mm frame

Fits boots: 230–250 mm

Typical skaters: older children, small teens

250 mm frame

Fits boots: 250–270 mm

Typical skaters: teens and adults

Example: a 270 mm boot fits perfectly on a 250 mm frame. This is Adam's preferred set up.

270 mm frame

Fits boots: 270–290 mm

Typical skaters: larger adults

290 mm frame

Fits boots: 290–310 mm

Typical skaters: larger adults

Wheel Sizes by Frame

Each frame size is paired with wheels designed to preserve consistent skating feel.

• 210 mm frame → 59 mm wheels

• 230 mm frame → 64 mm wheels

• 250 mm frame → 68 mm wheels

• 270 mm frame → 72 mm wheels

Wheel size increases are intentional and maintain stability, glide, and control across all sizes.

Important Notes

• ONE Blades frames are currently available in four sizes: 210 mm, 230 mm, 250 mm, and 270 mm
• These sizes are based on measured boot lengths and cover boots from 210 mm to 290 mm
• This range supports the majority of junior, teen, and adult figure skaters
• Additional sizes may be introduced in the future based on real-world demand and testing

If you are between sizes

Choose the frame closest to your boot length, but not longer. 

If you are unsure, contact support before ordering. We will help you choose correctly.