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 Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping!