Mini Skater 40PCS Party Bar KTV Concert Fiber Optic Beam Laser Led Finger Lights Lamp Ring with Elastic Bands Made of plastic. Size: about 127mm x 17mm x 16mm / 5.00 x 0.66 x 0.63 (Length * Width * Height) Elastic bands make it easy to attach to your fingers, can be used for KTV, party, ball, concert and bar, etc. Ideal for holidays, birthday parties, night activities and carnivals, etc. Net weight: about 7.09g / PCS