As you would expect, these cuffs are made from hard-wearing nylon strapping, cushioned with neoprene to be gentle on wrists and ankles. The suction cup itself is very heavy-duty, and can attach to any slick surface including metal, ceramics, enamel, tiles and more - be careful, though - they have more than enough power to pull a bathroom tile right off the wall if you put too much strain on!
This is good news, though, because that kind of strength means you partner will be helpless and completely at your mercy when restrained. There's be no easy escapes unless you say so! The pair of restraints included in each box can secure wrists and ankles comfortably up to 80mm, securing them with strong hook-and-loop fabric. The suction cup is 82mm in diameter, so your tiles should be larger than that for a good stick.
Note: Kanoodle can not be held responsible for damaged arising from use of this product. Weak tiles may unstick before the suction cup does!