When my wife and I first bought these cuffs, we were still curious about using restraints while having sex. We tried a cheap, clunky pair of metal cuffs but they simply weren't comfortable. As you can see in the pictures, each cuff has an O-ring, just like the kind used on key-chains, and they also come with a separate clip which comes in handy for connecting the two wrist cuffs together. Alternatively, you can use this clip to connect the wrist cuff to something else, to achieve a desired position.

We've used these cuffs in a number of different positions (e.g.: hands behind the back, above the head while laying down, etc.) and for a lot of different sex acts, and the comfort level has definitely held up, which was a big initial concern of ours. These cuffs fold pretty flat and you can really store them anywhere, such as under the mattress, in the nightstand drawer and so on, with very little concern about the space they take up.

They're made with strong Velcro straps to secure them and the inside is made of neoprene-type soft padding, which helps avoid irritation while being worn in high-movement situations. Our only complaint (which really doesn't even qualify as a complaint I guess) is that the Velcro can be noisy if you quickly pull it back. While this isn't a big problem for most people, if subtlety in the dead of night is a major concern, just undo the Velcro slowly or muffle the sound with a pillow or some other object.

We've been using the same set of these cuffs for over two years (wrist and thigh cuffs) and, for the price, we couldn't be happier with this product and how it's held up with all of the abuse we've put them through!

When we purchased these cuffs we also bought a set of the Sportsheets thigh cuffs. Typically my wife will wear both sets and have each wrist clipped to a thigh cuff, which definitely adds some creativity to sex.