Our 14k gold filled pieces are waterproof, and our entire collection is hypoallergenic and nickel free—designed to keep up with you. MATERIAL: 14K GOLD FILLED OR STERLING SILVER 925 BEAD SIZE: CLASSIC 2MM + 4MM STRETCHY SIZING: 7" Robyn is golden, playful, and perfectly stacked—this bracelet brings the shine and the charm.