First off, we have a queen bed, and they fit it. But there's not much room to play with- which is great because it is a restraining kit. HOWEVER, I would not recommend this kit for anything larger than a standard sized queen bed. A King would require a person whose limbs can reach the edges of the bed pretty easily. On our queen bed, we could not use the straps on the top and bottom of the bed, as shown. I'm too short and the straps don't go too far. We used them on the sides, which was very spreading. But it's kind of limiting on ways to use the straps. Longer-limbed people, a compact queen, or full sized beds will not have this problem. They will adjust down as far as you need, but they simply can't adjust past the edge of the strap.The leather straps are adjustable and very sturdy feeling. My strongest tugs don't threaten these straps! It has a sort of lobster claw-ish hook to grab the cuffs (not included), and you can tell the hooks themselves are not as sturdy as the straps. I don't recommend fighting too hard against them, but I wouldn't worry about them during playtime. They are easy to hook on and off to anything.This kit doesn't come with any cuffs. Kinklab has some great cuffs for sale, but I got my cuffs custom ordered at collarfactory.com and as long as you have some loops/dees or triangles to attach things to on your cuffs, it's no issue.tl;dr: pros: straps look great and are sturdy, 100% adjustable. Cons: Weaker hook than power players need, straps could be longer.These straps are fun to use if you can figure out how to use them. They did't come with instructions to which strap is for legs or which is for arms. The other thing is you have to purchase the cuffs separately.Recieved earlier than expected. This is a really nice under the bed restraint system and its double the price it is on here everywhere else.But they didnt come with cuffs, I wish they would have been more clear about this. Other than that its niceworks wonderfully