KooShoo Hair ties are the stylish solution to plastic-free hair styling! Made with sustainably source natural tree rubber, they're super strong yet gentle on hair. The mondo size is great for those of you with thick or curly hair who tend to need larger hair ties.Directions: These hair ties are biodegradable and will eventually wear out, but proper care can extend their life. To maximize longevity, avoid storing them in direct sunlight, stretching them while wet, or letting oils and hair products linger on them. Wash with like colors in cold water and lay flat to dry.Made of: Handcrafted from premium organic cotton and natural tree rubber. Made from 100% biodegradable materials. Certified sustainably sourced organic cotton. FSC Natural tree rubber certified by Fair Rubber Association.