This is not a rock-hard, acrylic or thin, clear plastic material. Our semi-flexible, custom made-and-designed, Armor Guard Professional Dental Day-and-Night Guards come in 3 different materials of your choice. First is our flexible, soft EVA material (default picture shown) that is recommended for light-to-moderate grinding and clenching with no TMJ symptoms. It is also for those who prefer a softer, cushion feel when they grind or clench. Your choice of thickness of 2mm, 2.5 or 3mm. Our second flexible material is our medium density, cloudy in color and is designed for moderate grinders and clinchers with multi-symptoms and is available in your choice of 2.5mm, 3mm, 3.5mm and 4mm which is our thickest option of any material we offer. Our third material is flexible yet semi-hard. It is designed to offer teeth protection for moderate-to-heavy grinders or clenchers with multi-symptoms. It will help relieve symptoms like headaches; soreness in the jaw muscles, ear, or neck; and other jaw issues. It is an extremely durable, dense, hard-yet-flexible EVA material. Your choice of thickness in 2mm, 2.5mm and 3mm. Our medium and semi-hard materials will retain your teeth. If you have a previous stone mold from your dentist, you can send us your stone mold instead of making a teeth impression. The Pro-form logo on our semi-hard material is for demonstration only. Armor Guard is proud to provide exceptional customer service throughout the customization process to help ensure that you’re 100% satisfied. Please note that sometimes, just like at the dentist, final adjustments may be necessary once you receive your final product. Our mouth guards are friendly adjustable once you receive them if needed, unlike an acrylic or plastic material. We expect our customers to work with us to resolve any impression or fitting issues that may arise since you are the one making your teeth impression. Working well together will help ensure you receive a perfect mouth guard.WORLD-CLASS CUSTOMER SUPPORT: We are available during our normal business hours for a phone consultation if needed to assist you in using our product. Our mouth guards are made in the USA with approved materials by Leading Dental Associations. Buy the best mouth guard on the market today, directly from the manufacturer Armor Guard!. RELIABLE TEETH PROTECTORS: We do not offer rock-hard acrylic or thin plastic guards. Our Pro-form, Day-or-Night, Semi-flexible Mouth Guard is the brand used most by dental professionals today. This is not a generic, over-the-counter boil and bite, but a high-quality, professional dental guard. Our guards are BPA- and latex-free. Plus, our guards are nontoxic, allergy, and child-friendly. THREE FLEXIBLE MATERIALS TO CHOOSE: We offer a soft, clear, flexible material that is perfect for light-to-moderate grinders and clenchers who do not have any symptoms. The second flexible material is our medium density, cloudy in color and is designed for moderate grinders and clinchers with multi-symptoms and is available up to 4mm thickness. The third flexible material is a semi-hard, cloudy in color and is designed for moderate-to-heavy grinders and clinchers with multi-symptoms. CUSTOM MADE MOUTH GUARD: This purchase includes an easy, do-it-yourself, at-home impression kit, which will provide us with your-self-made teeth impression to manufacture 2 uppers or 2 lower custom, professional dental guards for the same mouth. Once you receive your impression kit, you will use the included order form to select your choice of three different materials and five thickness’s (2 mm, 2.5 mm, 3 mm, 3.5mm, 4mm). Final product and all shipping are included. Upgrade shipping available. IMMEDIATE RELIEF FROM DISCOMFORT: Our flexible mouth guard relieves face and jaw pain, headaches, and tooth sensitivity., It will help you sleep a lot better and feel better. It will help prevent teeth breakage, damage, and bruxism (teeth grinding). It will also help prevent tenderness of the temporomandibular joints. Furthermore, it protects crowns, veneers, and dental work and comes with a case.Best Sellers Rank: See Top 100 in Health & Household. Age Range (Description): Adult. Item Dimensions LxWxH: 3.5 x 3.5 x 0.5 inches. Material: Ethylene Vinyl Acetate. Brand: Armor Guard. : B00V54UX2A. Manufacturer: Armor Guard. Date First Available: March 24, 2015. Product Dimensions: 3.5 x 3.5 x 0.5 inches; 8 Ounces. Is Discontinued By Manufacturer: No.