Each refill fits safe and snug in the mesh pocket on the outside of PARA'KITO® accessories (Wristband, Kids Wristband, Sport Band and Clip). As the natural oils’ active ingredients are released into the air, they help to mask the human scents that would otherwise attract loitering mosquitoes. Provides a constant protection up to 15 days per refill. Diffuses a blend of 7 natural essential oils - DEET-Free. Works in all climate zones - temperate & tropical. It's even waterproof ! To be used with a PARA'KITO® accessory. Technological breakthrough - Made in France. Fits all PARA'KITO® Accessories.