1 Box 48Pcs Rubber Ring Lanyard Set: Comes with 3pcs anti-lost necklace lanyard with 45pcs matching rubber rings, 3 colors: red, blue, black, quantity and color enough to meet your daily need, all of them packed in a paper cardboard box(22.8x12x1.7cm). 13mm Inner Diameter: Rubber lanyard straps: 430mm long; O Rings: 13mm inner diameter. The lanyard with matching silicone ring can help you find or keep your small items quickly and easily. Easy To Use: The loss-proof silicone rings can be used along with lanyards, also can be used separately as a decoration, You can carry it as you like, hang it on the key ring, suitable for any occasion, and protect your equipment in different ways. High Quality Material: The rubber rings are made of eco-friendly silicone material, lightweight and good elasticity, which can firmly fix the pen on the ring. Lanyards are made of polyester, not easy to fade and can be used for a long time Wide Applications: Smart silicone can use for pendant on phone, key ring, pens, lanyards, USB flash disk and some similar devices.