BugBand insect repelling band (case of 12 units) is designed with a patented breakaway strap that releases if it becomes entangled. Each repelling band lasts 120+ hours and is also waterproof. Works by releasing vapors which are timed released and form an invisible protective shield around the immediate area. Dermatology tested, hypoallergenic approved. Place on belt loops, hat bands, pet collars. May be attached to baby strollers, car seats, tents, chairs backpack straps or laced up in tennis shoes or boots. Please use as directed.