The G35 has different shell sizes and fixed inserts, which limit which liners are interchangeable. The liners can be swapped within the following groupings:

• X-Small / Small
• Medium / Large
• X-Large / XX-Large / XXX-Large

e.g. you can put a medium liner in a large helmet, but you can't put a small liner in a medium helmet.

G35 Liner Replacement from Cookie Helmets on Vimeo.