Designed for people with flat feet, we started by adding extra high impact zone padding to our wicking, odor-resistant pad.  And to guarantee your boots stay scent free, we utilized state of the art activated carbon technology.  By setting the top high impact zone layer over our 4mm high density moldable foam, you'll barely notice the rockiest trails you follow.  Imported.  Mens shoe sizes: S(5-6.5), M(7-8.5), L(9-10.5), XL(11-12), XXL(13-14).  Womens shoe sizes: S(6-7.5), M(8-9.5), L(10-11)