These quick and effective cuffs allow surprising adjustability!
Sometimes it's the simplest toys that are the best. These velcro, foam, and nylon cuffs easily secure tightly around the wrists or ankles, so there's not wriggling out of them. Then you can clip them together and pull the strap to tighten them. You can even pull them tight and use the extra nylon as a leash. By spacing them farther you can get your slave in more complicated positions and tighten the strap to lock him in. You'll get more than your money's worth on the first session with these alone.
Get two so you can cuff his ankles and wrists.
Quick Adjust Restraint Strap with 2 Cuffs Specs and Benefits:
Size: Adjustable from 2 to 24 inches in length, cuffs adjustable up to 14 inches, 2 inches in width
Material: Neoprene, nylon, velcro
This strap is easy to use and lets you get your partner into a variety of positions
Includes two cuffs that are closed, easily, using Velcro closures