WE USE WICKING FABRICS for all our products. We have discovered a lightweight, technical blend of 96% wicking polyester fibers spun with 4% lycra to provide snug yet flexible comfort. This silky, stretchy fabric SUPPORTS and insulates like a fine layer of air under your clothes, keeping you cooler in warm weather and warmer in cool weather. COMFORT CUT: Our innovative one-piece crotch design features no seams or excess fabric between your legs. EASY CARE: Machine washable, even in hot water! Tumble dry or lay flat. OUR SEAMLESS PAD is a low profile, dense construction of five layers - 1/2 inch open-celled nylon foam bonded to polyester terry on the body side and nylon tricot on the outside. This pad is then sandwiched between two layers of our wicking fabric, providing nearly as much protection as regular cycling shorts.