Godsen Men's 2pc Thermal Underwear Set Long John Pants and Tops 73%Cotton/20%Recycled fiber/7%Lycra Hand or machine wash Water temperature does not exceed 30 , not chlorine bleaching, ironing highest temperature 110 , not dry, not wring, hang dry Two piece set of pants and long sleeve shirt Light weight and warm knit material fabric Elastic waist band and fly opening Ideal For Daily Wear and Suitable For Outdoor Sports like, Skiing, Golfing, Camping, Fishing, Mountain Climbing, Motor Cycling etc.. Also Suitable For Builders Working In Cold