lailai Waterproof Silicone Swimming Earplugs, Comfortable, Waterproof, for Showering Swimming and Other Water Sports Specially created for surfing, swim and any other water based activities Protect swimmers ears and surfers from inflammation and other injuries without sacrificing hearing or balance Close to zero acoustic loss: carry out conversations and hear what's surrounding noise almost as though you weren't wearing them and without feeling isolated Easy to insert, remove and store.Fixation wings keep these plugs securely locked in place, even during extreme sports or heavy wipeouts Lightweight, soft and comfortable ,Small, medium and large sized provided Thickness: 6mm or 10mm (typically approx. 11mm) Width: Full 10cm Seam: Reinforced Nylon Stitch Stainless Steel Buckle: Single Prong, Heavy Seamless Roller USPA IPL AAU USAPLFOR STATE/LOCAL MEETS