Great thread a few questiongs from a mouthguard newbie: 1) Why not tight fit like the gladiator? If you are boxing do you have to worry about covering your gums (unlike MMA elbows to the mouth not allowed)? Also why did the gladiator cut you? It looks like rubber material, is this a poor design flaw or just the anatomy of the elbow impact? 2) How about breathability. Are two peice mouthguards (vs one peice) more breathable? What do most pro boxers tend to use? 3) how do guys normally mantain their mouth guards?