Theye Mosquito Adjustable Repellant Band White is manufactured from silicone and has been designed to contain an insect repellant within special enclosed compartment that is highly durable, waterproof and convenient for use. Theye Mosquito Adjustable Repellant Band contain a plant-based derived insect repellent which is the oil of lemon eucalyptus (Citriodiol) that has been proven to repel mosquitos.