These wipes are made from a double layer of unbleached softness. One layer being 100% flannel bamboo, the other being French terry - cotton bamboo. The stitching is 100% cotton. Why Bamboo you ask? Bamboo is a renewable resource. It grows up to one metre per day. It requires minimal water and is naturally pest and disease free so therefore requires few chemicals to grow. The fabric is known for its optimum absorbency . It is also anti bacterial, naturally deodorising, hypoallergenic and has dermatological properties . It is so soft. An amazing fabric perfect for baby.Washing Instructions: Wash before use.To maintain your wipes special qualities, wash in cold to warm water (up to 60 deg C) with a gentle detergent, free of bleach. Line dry in the sun is best, if tumble dry is needed use a cool setting. Over drying can result in damaged fabrics and you don't want that! Wipe size approx 25cm x 25cm and there are 5 in a pack.These have been dubbed as the best wipes Ive ever used!