Teak rings are the best ring on the market for the outdoor enthusiast, the cyclist, the traveler, the military man, the hunter, the healthcare professional, or the crossfit warrior! Teak takes care of our customers! Buy a Teak ring and we'll prove it to you. This product is a hypoallergenic, non-conductive, non-porous, non-toxic, waterproof, medical grade silicone rubber ring.