Shoe insert features a 4mm heel height which gives rearfoot correction of 3 degrees Comes with a pair of Vasyli+Prior Orthotics in a large size (Men's 3.5-5 shoe size) Each insole is built with two Polyurethane pads, a dot at the heel and a large area at the forefoot, for extra shock absorption Used to create more contour to flat shoes or cleats that have been worn flat Ideal for any sport and type of soe including dress shoes The VASYLI Medical story began more than 35 years ago. It was inspired by professionals dedicated to creating innovative products grounded in the scientific principles of lower-limb biomechanics. In collaboration with leading biomechanics experts, Phil Vasyli developed a collection of custom heat moldable orthotics to treat a variety of functional foot and lower-limb disorders. These researched-based orthotics were easy and fast to fabricate in the clinic, providing patients quicker results at an affordable cost.