Perfect way to relieve conditions such as Morton's neuroma, fat pad atrophy, metatarsalgia, sigmoiditis, neuromas, burning sensations at the ball of the foot, forefoot calluses and bunion pain. This metatarsal pad drops off before the metatarsal heads to offload pressure and provide immediate relief. It will fit into any type of shoe. If it get dirty, just run the met pads under warm water, scrub the dirt off with your fingers and set out to air dry. The adhesive renews.