The metatarsal bones, or metatarsus, are a group of five long bones in the foot, located between the tarsal bones of the hind- and mid-foot and the phalanges of the toes. The small amount of felt cushions the ball of foot and alleviates pain. These metatarsal pads are for use on metatarsalgia (pain in the ball of the foot), blisters and calluses caused by irritation. - 1/8-inch-thick metatarsal pads are made of white felt with an acrylic adhesive.. Pads remove pressure on the metatarsal heads to alleviate pain and discomfort.. Perfect for anyone who spends lots of time on her feet..