【champdelarose】 Leather Key Ring Charm Necklace - Black Unused Leather Key Ring Charm Necklace. This necklace features a key ring charm inside a leather cover made of beautifully glossy cow leather. It's also recommended for layering with your everyday accessories. The length of the cord can be adjusted by changing the knot. Please enjoy the natural texture of the material. Material: cow leather Although the materials used are less likely to cause metal allergies, this does not guarantee that they will prevent all metal allergies. * Please be aware that the plating on the accessories may discolor or peel off if exposed to hand washing, bathing, or the sea.