Great handboiler very amusing (but) beware of handling it or squeezing it hard because it’s very easy to break especially in the hands of children.

First of all, I ordered the 4 pack and all 4 arrived intact. I got one of each color/design: blue, green, red, and purple.I use these to demonstrate thermal expansion and the concept of boiling points in my junior high science classroom. The students love them, but I have yet to find a way that I can keep them in my "museum" (book shelf full of cool, hands-on science things for the students to explore) without the hand boilers getting broken within a few weeks. They will break with rough handling (you don't need to squeeze!) and the tops are more fragile than the base, but if you are careful with them - always put them down on a level surface! - they can last for years.

Fun product at nice price. Make great gifts. Nice to know what colors you get. Good quality but very fragile and some were broken. Amazon immediately replaced without me having to make a return. I first ordered for adult bible study class, the ladies loved them. Made a big hit at Christmas. Have already ordered some more, should arrive today.

All the hand boilers arrived individually boxed and none were broken. They are delicate, but even my 6yo can hold them with supervision. These were the big hit at Christmas. The colors are all beautiful and along with teaching about heat/energy, they simply look like beautiful art pieces. You will not be disappointed.

Awesome! Delivered no damage everything as pictured.