Good product, but the purple one ended up being made wrong and drops about double the speed as the others. If that's important to you, then I would be cautious. Our son needs sensory stuff, so it's just a toy for us and no big deal. He enjoys playing with it, and he's 8.

I bought these for my nephew who has autism and enjoys watching water in water bottles. He seems to enjoy them but still prefers the water bottle if he can get his hands on one.

As a Special Education Teacher, I have a collection of sensory and motivational implements that I have collected over the years. This is an appealing visual sensory item that my students cherish and request. It's important to instruct the user how to handle the hour glasses to ensure safety and long term use.

As the Grandmother with the coolest toys on the block, these are major treasure for my grand babies. My precious Sweet Peas range in age from 10 years to 3months and there are six of them. About a year ago, I purchased a beautiful canvas tepee and outfitted it with soft firefly lights, suede pillow, fake fur rugs and soft blankets. My older Sweet Peas will retreat to their tepee and take their basket of sensory items and favorite books into the tepee for a "time in" when they are overwhelmed with siblings. My younger Sweet Peas will line up all of their hour glasses and sit on the floor to watch them drain, turn them over and repeat the process.

Overall, this is an excellent addition to a sensory box, not durable enough to be struck against anything or if it is accidentally dropped on a stone tile floor. I've used these in the classroom and have bought eight new ones for the home. My Sweet Peas usually ask to take a couple of them home and bring them back to change them out for a new on.

Great visual in my classroom. Students love these! They break easily though and when they do, it smells.

Cheep toy, but good for the price. I doubt it's durability. I bought these for the children in a special needs class. They loved this toy. It is peaceful and mesmerizing, like watching a sand timer, but it's much cuter.