Specifically designed for swimmers, the Northcore Swimshields Swimmers Ear Plugs block out water while allowing in sound for optimised swimming balance, equilibrium and protection against surfers ear. Northcore Swimshields use advanced acoustic filter technology centred within unique organic TPE earplugs which are designed to fit neatly into the ear's auditory canal. Swimshields are 100% allergy-free soft washable material so are super comfortable, very effective and stay in the ear in most conditions when correctly inserted.  The pack contains two sets of universal plugs to allow the user to find their perfect fit and an optional 60cm removable earplug leash and clip to prevent loss of the plugs should they become loose. The set comes in a re-usable mini hard case for convenient storage in between use. Developed and manufactured in the EU. Features: Block water - not sound. Reduce the risk of swimmers ears Removable advanced acoustic filters 100% allergy-free soft organic TPE material Includes two universal plug sizes for customizable comfort and fit Optional use detachable 90cm leash with slider  Perfect for swimmers, triathletes and many more