If you get wet alot this is the Phiten for you. Each of the Sport Necklaces is called the S-type and is made with a silicone material that will not allow sweat or water to permeate into it.
All of the sport necklaces feature the embedding of titanium spheres are 100% waterproof so no more sweaty golf or baseball gear. Many tennis players and water sports people like this version. Phiten S-Types come in