Vosaro Anti Snore Chin Strap Specification Material: Nylon without odor environmental protection materials) Adhesive design: Velcro Adjustable Velcro length: 5 inches Suitable age: ages with Men, Women,Children Application: snorers people sleep with open mouth SNORE CHIN STRAP INSTRUCTIONS: STEP1: To hold longest strap by left hand(loops side to right hand to hold small strap(hooks side to down), place your chin on center hole of strap. STEP2: Adjust loops Velcro tightened on of your head. STEP3: back side loops-hooks of strap, adjust make tighten behind of your open close your mouth, adjust strap loops it still tightened. Please read following information before use: This is chin strap with no-smell, nature fabric materials, used by sensitive skin adult. Please wash it softly don???t water. Suggest to wash 2 weeks used. Day1: Please wear it comfortably make sure influence sleeping. (Adapt day) Day2: Please adjust to more tighten from of your head to reduce your snore. Day3: Please adjust to more tighten from back of your head to reduce your snore. If still have snore caused congestion, please also nose clip dilators from vosaro shop from.com. In case think that chin strap doesn???t work you. Please contact with on package we will provide best service you.