I don't have a bed frame and was looking for a good way to strap myself/my partner down. I would say this did the job.

The system is pretty straightforward: one long strap goes underneath the mattress in the center, with two velcro cuffs coming off either end.

The system works quite well for various spread-eagle positions, but the straps allow too much freedom of movement when the hands are too close together, plus they become too easy to remove.

The packaging says "one size fits all" and I had no difficulties with a full or queen mattress. It looks like it would fit a king fine as well, though I feel that a twin might be a bit cramped for this toy. It's best if the arms and legs are both tied down, as the straps seem to work themselves free a bit if only one or the other is tied. The heavier the mattress, the less of a problem this seems to be.

The entire set is very light and compact, extremely easy to travel with. More importantly, it's very easy to simply tuck the straps underneath the mattress when not in use! This is my favorite feature of these restraints, as I find ropes often require more set-up than my schedule allows. It's rather easy to spring surprise bondage on your partner, which is always enjoyable!

The straps are surprisingly strong for being velcro, and I found them very difficult to get out of, being a woman. I feel that a man or a woman somewhat stronger than myself might have an easier time with it, but I would say that these straps are secure enough to get the job done. The velcro portion is a bit long to accommodate wrists/ankles of different sizes, but if you intend this to be used solely for the fairer (small-wristed) sex, it might be a good idea to cut off some of the excess velcro to make it more difficult to remove a given strap while wearing it. They are soft and very comfortable as well, which I consider a huge plus! You can keep them on throughout an entire session without any undue discomfort.

All in all, there are pros and cons to this product. It is probably a bit too flimsy for the more seasoned soul. They are better for beginners or people looking to experiment with bondage. Yet I cannot stress enough the convenience of this product! I work a lot and am very busy during the week- but I still have needs! This is an easy way to add some spice into the bedroom if you're new to bondage, in a time crunch, or just lazy. It’s a very solid restraint system.

It is possible to use the straps for some new and unique positions- be creative! Collars and the like can also be attached to them, if you so desire.

I've had this set for years at this point, and it's still in great condition. It's undergone light to heavy use, depending on the point in my life, but hasn't had any tears or damage of any kind. The cuffs have faded a bit in color, but that's to be expected with any fabric. I still have quite a good time playing with this, and the velcro is still plenty strong enough to hold me. I am still very happy with this purchase!