The SuperFeet Trim To Fit Yellow was originally designed to fit the heel to toe profile of hockey skates, but also adds comfort and support to any slim footwear with a raised heel. The Trim To Fit Yellow has been expanded in the toe box so that it provides full underfoot coverage. SuperFeet has also incorporated their diamond venting system which aligns with the perforation systems in most hockey cakes and cycling shoes. Agion® is an antimicrobial treatment to reduce bacteria and prevent odor and will make your day better and your nose happier. The SuperFeet Trim To Fit Yellow is ideal but not limited to feet with low to medium arches, and is recommended for use in hockey skates, cycling shoes, track spikes and western boots.