Pro Max was developed in cooperation with our brand partner - Ortholite, the world's largest producer of OEM brand insoles for over 400 other retail brands and the leader in open cell foam technologies. Together we've developed the Pro Max I and Pro Max II insole using different combinations of variable density layered foams throughout the heel, ball, medial and lateral arch areas of the foot to absorb static and rebound shock. This works like a hybrid suspension system in a luxury car as the foot is exposed to variable weight and velocity impact on different surfaces. Pro Max is designed to absorb an average of 300% more rebound shock compared to OEM insoles and other replacement insole products marketed to reduce orthotic pain and reduce shock to the lower body joints. This new advancement in foam technology not only absorbs shock and reduces stress on the body like no other insole material but it also breathes, is antimicrobial (kills bacteria), is machine washable and made with eco-friendly materials.