100% Polymer Nylon, Years Deep HUC Bottoms wear designed for maximum comfortable with quality polymer material. Bottoms also have a reflective piping to make sure if they do not hear us coming (HUC), they see us coming!, Fits true to size. For a looser fit, please size up., Colour: BLK/STNE GRY, and This item is not eligible for refund, but exchange is accepted within 14 days.