The Walking Pro has comfort from inside. Propet Preferred orthotic insoles are designed specifically to improve foot function, reduce pain caused by poor foot biomechanics, and to prevent further problems or injuries in the future. Top layer made with memory foam to mold to the foot for the perfect fit with 3/4-length semi-rigid orthotic between the top and bottom layers to reduce arch strain and discomfort and improve lateral stability. Extra cushioned bottom layer adds exceptional shock absorption and delivers superior compression set performance to help retain shape. Soft, breathable nylex sock liner with a perforated forefoot, keeps feet cool and dry. Anti-microbial properties fight the growth of odor causing bacteria and fungus. Ideal for an active lifestyle. Deep heel bed and firm arch support are great for relief from plantar faciitis.