Cotton Blend One Size==35-39 Suggest to hand wash ,Machine wash is ok , Hand wash is recommended for long lasting quality. Wicking Cool Comfort Fabric helps wick moisture and keep feet dry Engineered arch support for a more secure fit and less fatigue Well Made Cuff: The Ergonomically designed well made cuff make socks fit your feet perfectly, will not be tight and neither loose. PERFECT FOR ANY OCASION: our thick Low cut running footies customized for various occasions, sports, workout, golf, training, treadmill, climbing, gym, cycling, other indoors or outdoor activities; can go with also casual footwear or boat shoes. High performance Socks perfect for mother's days,birthdays,Christmas,valentine's day,St.Patrick's Day,Hanukkah,Valentine's Day,Easterday,anniversaries,and everyday gift ideas!