Made with a special two-layer soft jersey knit, Pepper Bi-Ply is sure to keep you warm when you need it most. The unique double layer construction traps warm air between the two layers for excellent thermal retention, while the special Hot Chillys seasonings provide additional moisture management to wick away the damp, keeping you dry. Pepper Bi-Ply is a tried-and-true favorite choice for comfort while protecting against the cold.