COOLLO SPORTSBoil and Bite Mouth Guard (Youth & Adult) SA Custom Fit Sport Mouthpiece for Basketball, Karate, Martial Arts, Wrestling, MMA (Free Case Included!)

My son is very picky about his mouthguard, he wants one that is comfortable and does not look bad. He thinks this mouthguard is very comfortable and is not embarrassed by its look.  This is great now I don’t have to fight to get my son to wear a mouthguard.

Good value. Not hard and bulky. Soft

Used for Martial Arts training. Perfect size for a 7yr old.

I use and very much like OTHER Coollo mouthguards:https://www.amazon.com/gp/product/B07ZQQHBL3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1&psc=1THOSE are two-layer: the soft inner layer molds to your teeth and the tougher outer layer provides protection. THOSE are easily formed and grip well, and provide nighttime anti-grinding protection for years.THESE single layer mouthguards are sold under an almost identical title but are greatly inferior. They try to accomplish both the grip and the protection with one piece of plastic - and it DOESN'T WORK. I tried repeatedly to get a tight or even usable fit, without success.Forget these. Buy the 2-layer and be happy.

Perfect for our 13yr son

Too lose unable to get a tighter fit. Tried 3 times putting it in hot water. This falls out so I cannot wear it for teeth grinding. Choke hazard when sleeping might be okay for sports.

should be tighter

When we put it in hot water to form to teeth, it shrank to almost nothing! We went and bought a different one.