Cork Ball: The diameter of the cork ball key chain has been updated to 50 mm, which increases the buoyancy, allowing your key to float on the water and not easy to lose, especially when it falls into the water, it is easy to be found. Material: Our boat keychain is made of high-quality cork,durable rope, with a surface, light weight, waterproof, strong and convenient for carrying. The rope is not easy to fall off and can be used for a long time. Practical: Floating cork ball key ring makes your keys easy to identify, can keep your keys afloat during without losing them. One floatable keychain can float easily with up to 45 g of keys attached, before use, please test the weight first to avoid losing items. Applicable Occasions: perfect for anyone who like water sport or travel near water, great for all kinds of water sport like kayaking, sailing, water-skiing, boating, swimming, fishing, surfing and so on. Easy to carry, very suitable for summer Material:cork colour:Blue+black+wood Package Contents: 4 x keychains Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.