Channel your inner Carrie Bradshaw ( Or Hailey Bieber) and STACK THAT NECK. And yes, you can shower and swim in them. Never have to take them off quality.All of our necklaces are made of quality materials, (some sterling silver but most 14k-24k gold plated) meaning they are all waterproof, hypoallergenic and tarnish resistant. Each necklace is designed to be stacked making them extremely versatile. Stack 4-6 of or necklaces for a more extreme look or 1-2 for a more simplistic vibe.