Kit of earplugs and nose clip. Designed to prevent water from entering the ear canals and nasal passages. CAUTION Earplugs cannot be used in immersion but only and exclusively in surface swimming. In fact, its waterproof fixing has not been designed for immersion and an improvised entry of water at depth could cause the eardrum to rupture. Earplug and nose clip kit - Designed to prevent water from entering the ear canals and nasal passages.