Stoner Vibes Wrist Cuffs are lightweight and adjustable. A fun glow-in-the-dark cannabis design is accented with black metal hardware and buckle fasteners for the ideal fit. The cuffs link together with D-rings, a 5 inch chain and lobster claw clip for full wrist restraint. Buckle-closure cuffs are adjustable from a 6 - 10 inch inner diameter, and are a fun addition to your BDSM play. Use them independently or with our fully interchangeable bondage gear companion products from the Stoner Vibes Chronic Collection. Directions for use: Hold it under direct incandescent or LED light or sunlight for 10 minutes to activate the glow.