It is made of 100% Neoprene for your comfort. The strap at the top of the head allows for a one size fits all design. For many, proper jaw support during sleep will allow for a pleasant nights sleep Features:1. Comfortable & Adjustable Snoring Chin Strap Made With Soft And Comfortable Fabric.After receiving the package, please hang this strap in airy place to de-odor because of the material.2. Comfortable During Sleeping: keeping your chin and ears out of chin strap, greatly to avoid the restriction of strap, breathing and no side effects. One size fits all, adjust straps in chin and neck back.3. Easy to Use: simply sling it over your face around your chin and neck. The snoring stopper stops snoring by holding your jaw firmly in place. Greatly prevent tongue and throat from falling back and blocking airway.Material: NeopreneColor: Blue or BlackNet Weight: 42gPackage included: Anti Snore Belt