Developed using Biofuse® technology for maximum comfort and fit, the aquatic earplug features a comfy, ergonomic design for easy insertion and removal. Featuring a multiple flange construction for a superb, reliable seal that stays put during training. Ideal for regular swimming and fitness training, it comes with a reusable case for safe storage. Earplug - designed for use in the water during swim training Biofuse® technology - engineered for great comfort and fit Ergonomic - designed for easy insertion and removal Multiple flange construction - creates improved seal Storage -reusable case FLANGE: Tpr. Core: PP