Pepper Bi-Ply is a midweight soft jersey knit with a double layer of back-to-back MTF micro spun polyester that provides exceptional thermal properties and added moisture management. This fabric's special two-layer knit traps air creating warmth and comfort while the flat seam construction allows for seam strength without abrasion.
I have this sandals for ages. I am still happy and I am using Pepper Bi-Ply T-Neck Men's Black-Medium PB3077 MD BLK almost every day. This Pepper Bi-Ply T-Neck Men's Black-Medium PB3077 MD BLK was reffered by my friend.