JKing New Colors Colorful Wristband Keychains - Rainbow Gradual Change Colors Plastic Spring Spiral Coil Stretchable Wrist Key Coil Wrist Band Key Ring Chains Key Holders,5pcs (Blue+Sky Blue+Green) Perfect for securing keys,for outdoor sport,or during water sports,home,office,sauna etc Coil size:about 50mm;with 1"(25mm) diameter nickel plated steel split ring Material: Plastic Rainbow gradual bright colors,can be hold your keys easily Flexible plastic coil expands to secure keys around wrist,and,fits comfortably perfectly around your wrist