Smile Like Everyone's Watching. Protect your teeth and get a more restful sleep. Ready to wear, no boiling needed. BPA Free. For upper or lower teeth. One size fits all mouths. Bite plate absorbs grinding and clenching. Stabilizing lip limits sliding or slippage. Hygienic 3-day disposable. The streamlined one size fits all GRIND NO MORE® Dental Guard is uniquely designed to be worn on either your upper or lower teeth – whichever is more comfortable. GRIND NO MORE® Dental Guard meets the demanding needs of both "clenchers" and "grinders" – bite plate alignment grooves, absorbing bite plates, and stabilizing bite plate lips work together for maximum protection. Each disposable GRIND NO MORE® Dental Guard can be used for up to 3 days – it's clean, fresh, and hygienic.* Can be used for up to 3 nights. Please see enclosed insert for additional details.