Looking for hair elastics that don't harm your hair? Discover these hair elastics from BLAX. These elastics originate from Japan and are made from super strong and reusable polyurethane without metal joints or seams. The hair elastics stretch 3-4 times their size without losing their elasticity and are developed with soya- and water-based materials for a healthier and environmentally friendly product. They never come loose in the heat or cold, neither break in wet hair or in water, stay put when severely strained, and glide off without tangling or pulling your hair. They don’t harm your hair and are ideal for people with brittle hair. You can wear them when you sleep, and they are ideal for sports or spa. Oeko-Tex Standard 100 Class label.