Made from PORON® performance urethanes which help stop friction, prevent blister and calluses from forming, protect bones and tissue, and provide overall comfort. Kit includes: Killer Kushionz® (1 pair) – full insoles that provide ultimate support and can be worn in open-toe shoes.Heavenly Heelz® (1 pair) – back-of-heel cushions that help keep heels from slipping in and out of shoes.Tip Toes® (1 pair) – ball-of-foot cushions to stop feet from sliding forward. Made in the U.S.A. and