SWELL. 10017-A21-65565. CORAL REEF BOTTLE. PINK. Coral Reef captures the majestic pink of the sea. As part of our Stone Collection it features an opaque finish and a durable stone-like texture for added grip that emulates the most coveted semi-precious gems. S well bottles feature Therma-S well Technology with triple-layered vacuum-insulated construction designed to keep beverages colder or hotter longer than all the rest. Made from 18 8 food-grade stainless steel.