Lightweight and waterproof mosquito band uses a blend of six, plant-based essential oils to naturally repel mosquitoes. The pellet fits in the mesh pocket on the outside of the band. As the natural oils are released into the air around you, they help to mask the scents of your breath and body, making it harder for mosquitoes to find you - a super-simple and super-effective way to repel mosquitoes. Includes two repellent pellets; each provides 15 days of protection. Pellets do not come into contact with skin, making it suitable for use by individuals susceptible to skin allergies and irritation, as well as pregnant women and young children. Length of band adjusts from 6" to 9" with hook-and-loop closure. Refill pellets sold separately.