The Spenco 38-034-04 PolySorb Cross Trainer Insoles are designed for men in sizes 10-11 and women in sizes 11-12. Made with a combination of ethylene vinyl acetate and polyurethane foam, these insoles provide support and cushioning for various activities. The Spenco brand is known for producing high-quality foot care products, making these insoles a reliable choice for those looking to enhance the comfort of their shoes.