Step 1: Top & Bottom
Measure the circumference of your limb 4cm and 30cm up from the bottom.

Step 2: Find your size
Take both your top and bottom measurements and use the chart to determine your size. If you're in-between sizes, we suggest remeasuring again to be on safe side. If the size you arrived at after measuring seems too big or small, in some cases it helps to use the size of your current liner as a very rough guide. Some brands will print the size of the liner on the front or side.
SIZE | Bottom (cm) | Top (cm) |
Small | 15-26cm | 20-33cm |
Medium | 18-31cm |
23-41cm |
Medium Plus |
20-31cm |
33-56cm |
Large | 23-35cm |
36-56cm |
Large Plus |
28-43cm |
40-63cm |
X-Large | 33-50cm |
43-69cm |
Step 3: Length
Length is a matter of preference. You can trim this liner with a very sharp scissors. Start by applying your Ottobock Liner and mark on the liner where you want to trim. Remove your liner and trim at your mark.