The Powerstep Memory Foam Orthotic Insoles is a full-length, semi-rigid orthotic arch support insole that features a plush slow-recovery memory foam top coat for sensitive feet and those seeking extra cushioning. They have a dual layer cushioning with shock-absorbing Poron Memory Foam/VCT(variable cushioning technology) foam for enhanced comfort. The top of the insole is covered with a friction-reducing, anti-microbial fabric.Ideal for athletic shoes, dress shoes and casual shoes & boots.