Review on UKKITEK Suction Cup Spinner Toy: 4PCS Random Windmill Cartoon Animal Hand Spinning Toys with Suction Cups - Perfect Sensory Toys for Babies, Kids, Toddlers - Ideal Gift for Birthdays or Bath Time Fun! by Michael Bryan

These tops are great for entertaining the child, especially good to take to a restaurant and stick on the table. Some of my spinners arrived with black spots (see photo) that I couldn't remove. This doesn't affect functionality but I was wondering what they are made of as they seem to have been used in the past. The suction is good, you need to stick it on a smooth surface. I've found that they can fall off after about ten minutes. So if you take them to a restaurant, be sure to check them from time to time in case the pull shows up. They will last longer if you wet the suction cup beforehand. They make a little noise when turning (nothing annoying, more like a rattling noise). I wouldn't use them in the bath just because they can't be opened. clean and dry properly, but I like to play out of the bath. Easy to use and you can also attach them to a sliding glass door to teach your baby to sit.