Restraints are secure and comfy, says my sub. Neat they have hook latch fasteners on the wrist and ankles, lets them be very versatile. Hook them together for handcuffs or ankle cuffs in their own right. The under the bed adjustment is somewhat limited, seems to just fit a under a queen sized mattress. Mattress only, not all the way to box spring, the length is too short for that.

Texture and material construction: The tethers are made of 1" wide nylon web and are 48" long. There are plastic adjusters on the middle section as well as on each of the tethers. There are metal attachments hooking the center section to the tethers together. The cuffs are made of a thin Neoprene and have Velcro closures. There is a metal clip attached to the cuff to remove the cuffs from the tethers. I took off the hook and flipped it around so that it remained attached to the tether. This allows for other cuffs to be attached. Review Details: The under bed restraints are a bit of a challenge to get under the bed alone if you have a queen sized bed. You can adjust the tethers so they come up from either the top/bottom or sides. The cuffs are attached by Velcro so you can get out of them with a bit of effort. This can be either a negative or positive depending on your level of comfort with being tied down. I have some leather cuffs that I can switch out with them. The cuffs are large enough for a man, but are also small enough for a woman. My wrists are very small and they fit fine. The one main drawback is that when these were removed from the packaging they had a very strong chemical odor. I had to air them out for a good week before it subsided. You can leave this system under your bed or you can easily take it with you to a hotel or other bed. A positive is that you can not only use these for restraint but also for positioning. You can switch out the ankle/wrist cuffs for thigh cuffs, to add some variety.