The advice on Kamik etc is good.
A: I buy them 2 sizes larger than my normal size. This allows me to wear 2 thick pairs of socks inside the already thick felt liners.
B: Verify that you can remove/insert the liners. Some are really hard to get in and out.
C: Untie the laces, and tie a single overhand knot around one of the D-rings. This keeps you ...