Designed for maximum comfort and freedom of movement All season base layer which keeps you hot when its cold and keeps you cold when its hot Advanced,high wicking fabric helps you stay dry by transporting sweat away from the body Flat seam construction helps prevent skin irritation Stylish and comfortable elasticated waistband Quick dry fabric Open printing elastic This base layer trouser/tight is made of high quality 80% Nylon and 20% Lycra Elastane.