Our Flume necklace is available in four different adjustable lengths: 16.0 - 18.0", 18.0 - 20.0", 20.0 - 22.0", or 30.0 - 34.0". The model is wearing the 30-34" necklace at its longest setting. On all lengths and colorways, the rounded rectangular pendant piece measures 1.7/8" by 2.0" and features three silver and solid gold circular tubes. Choose your desired length and colorway from the dropdown menus below. Materials: 14k gold, 14k gold-fill (14k gold over brass core/no nickel) or sterling silver (.925). All materials are hypoallergenic. This necklace was designed for Design Lab's second capsule collection in Asbury Park and is handmade in our Upstate New York production studio. Please allow 2-3 weeks to receive your jewelry as everything is made to order.