Flex Arch Support
The Flex is actually named for its flexibility; it is made of a springy compound that bounces back after each compression. The Flex is so flexible that most customers feel comfortable in it right away, and it's a "must-have" for those tighter-fitting dress shoes and sandals. The Flex is the perfect maintainer for those with flatter or more sensitive feet, since its low profile and gentle flexion allow it to follow the contours of any foot.
What's in a Flex?
The "front" end of the Flex features a small lump. This is called the "metatarsal rise," and it is designed to help take pressure off the ball of the foot and the toes every time the foot takes a step.