It is waterproof and works perfectly and repeatedly for outdoor or indoor use. The material of the clothespin makes items with light weight but very strong. It is ideal for clothing in the laundry room or closet and can be applied to grip clothes, socks, towel, plastic bags and other things in the kitchen or bathroom. It is an essential and practical life tool around the house and office., and also perfect for hanging photo paper crafts arts, organizing documents, bills or holding ornaments and gifts in the Christmas season. Air drying keeps clothes clear. It is a green way to save energy and save money on costly dryers that cause your clothes to shrink. It's easy to use, fashion and beauty, style simple and generous. These clothes pins are with multi colors, which can decorate your life and let you also have a beautiful mood when drying clothes. It have three different colors-- 10 purple, 10 blue, 10 yellow.