The design is rather chunky and clunky for my liking. They are my first official restraints, but even I can tell you that they aren't the best thing out there. The materials are pretty strong and certainly too strong for your average lady to break. The materials stated on the box are vinyl, neoprene, and nickel-free hardware. While I really couldn't tell what metal is being used, seeing as it's been painted, it's obviously stronger than the fabric.
The chaining mechanism looks flimsy from its unfortunate paint job, but it's pretty damn sturdy. However it doesn't take Houdini to escape these things. The metal chain is easily removed if you're focused enough on finding the clasp. My only problem is the fit. I had no issues with finding a setting that fit, but it really lacks any in between sizes. I had to choose between a setting that was too loose to feel comfortable and a more snug fit that I wasn't immediately ready to try. My fear is that those with wrists not nearly as small as mine, may have issues being comfortable during intercourse.
For my boyfriend and I, these babies worked like a charm. There were a variety of ways to chain the cuffs and we enjoyed using our imaginations. I learned that I really like that sort of thing and it may end up being a go-to kink of ours now. We had no real problems aside from comfort in the face up position when my wrists were restrained behind me. My weight bearing down on it added some red marks on my wrists, but other than that we were completely fine.
The box suggests washing with soap and water after every use, but this doesn't really make sense for the toy. Odds are every box has this on the side, seeing as it also suggests using lubricant. Vinyl doesn't get dirty as easily and usually wipes clean. The neoprene inside will likely take to spot cleaning and air-drying in the case of major soiling.
The packaging is actually quite beautiful. The font choices, use of color, and photography, points to them having spent some money to hire a good graphic designer. It's a clean design, tasteful, and discreet. The only issue I might have is that the packaging didn't really have instructions inside, and the cuffs were kind of just in the box, without any internal structure to keep it from moving about inside.
These cuffs have expanded what I know about myself sexually and have added a nice bit of excitement to our holidays. They likely doubled my arousal during intercourse and added to my overall sensitivity. I think my boyfriend also enjoyed being in control and watching me writhe in pleasure. Thanks to this, we'll likely buy other restraints and couple's toys in the future.