Profile: Great Lakes Earmold Laboratory, Inc. provides earmolds and custom earpieces. We provide online shopping to the customers. We produce ear blocks, connectors, ear hooks, otoscopes, earlights, cleaners and disinfectants. Our large bore product is used when the physical characteristics of the ear canal are too small to accommodate a drilled horn bore. Our earmolds & earpieces include swim plugs, sound plugs, sound bores, soft earmolds, hard earmolds & open fit. The swim plugs are designed with a medical grade hypoallergenic silicone material that offers a unique flexibility and softness & provide comfortable protection against water, wind, noise, & cold temperatures. The open fit slim tube can be inserted into custom earmold style with standard or variable venting to customize the fitting.