The Anti-Mosquito Braceletss are made of 100% silicone which is designed for waterproof and adjustable. The mosquito repellent bracelet refills come with natural plant oil: lavender, chamomile, peppermint, citronella, tea tree, eucalyptus and mugwort essential oil. DEET Free, None chemicals and Non-toxic to anti mosquitoes, insects and bugs. Safe protection for kids, adults even pregnant women and baby. it is portable fashionable for a long holiday, you can never leave without a travel size mosquito repellent band. Let you enjoy whatever you like. Perfect for working, reading, studying, watching TV, sleeping, gardening, swimming, walking, running, golfing, grilling, picnics, camping, hiking, climbing, hunting, fishing, traveling, etc.