Here's what other sites are saying:
Superfeet Trim to Fit - Green - New - Designed primarily for footwear with a removable insole, Superfeet GREEN provides maximum support and shock absorption. Ideal for Medium to High arch shaped feet. Recommended footwear: Ski, Snowboarding, Run, Hike, and Walking.
- Massey's Outfitters
Designed to fit in high interior volume action oriented boots or shoes. 4 component build-up:New Holofiber Top Cover.High-density Trocellen foam full length footbed.BLR shock absorbing heel to midfoot pad.3/4 length polypropylene stabilizer cup.The most stable footbed design with biomechanical principles.Unmatched in performance and comfort levels compared to other insoles.Deep heel cup absorbs and evenly redistributes inertia shock and controls heel deflection.Extremely stable to help control foot positioning.High profile fits best in higher volume footwear.Safe to use in Gore-Tex lined footwear.