Squeeze CraftColor Changing Frudge Putty Heat Sensitive - 4 Pack Frudge Putty - Ideal for Sensory and Tactile Stimulation, Event Prizes, Slime Parties, Educational Game, Fidget Toy

But I cheated and used a blow dryer (in the tin and for a short amount of time) to activate the color changing! It really does take a lot of doing to make it start changing colors if you're doing it by hand, but it works (and changes more quickly afterwards), and if you're using it as intended, worth it. The purple and red very noticeably change colors, but the green is a lot more subtle! As you're working on the green, it goes from the darker slime green to an almost neon green and doesn't show the temperature change as much when it reaches the neon green color.Aside from that, the texture of it is kind of off putting at first. It has an almost oily feel to it, but as you handle it, it kinda sorta goes away? I can only assume you're either kneading it back into the putty, or you're kneading it into your own hands. Or a little bit of both. Either way, I'd probably avoid getting it onto clothes or furniture.It also kind of have a sweetish chemical smell to it. It's not a strong scent; you'd have to hold it to your nose to really smell it, but it's there. In case you are sensitive to that sort of thing. It's all in all not a bad buy at all. I was kind of hesitant because of some of the reviews (because I scan the reviews like nobody's business), but my personal experience was not bad at all. It definitely helps if you fidget with things with your hands, and it has definitely worked out the muscles in my hands, wrists and forearms!

I love the feel of this putty! It's the perfect consistency - a little bit hard at first but as you use it it softens up. Two of them don't change colors when I use them at room temp (the red/yellow and purple/pink), but I put them in the fridge for 15 minutes and they got to the "cold" color. This adds an extra sensory input (cold to warm) which is great! The metal tins don't feel airtight, so I put them in other resealable containers.

So I ended up ordering 4 sets bc I kept getting a repeat of colors. My though were that if I bough one set I was getting one of each color, negative ! So I kept one of each color and returned the rest. Pain in the butt but I do like the puffy and mine change color easily. I use it to help me stay calm or focus at work on occasion, I enjoy this was more then a fidget spinner while being at work. Overall good stuff just don’t expect one of each color when u order.

Children love it, that's a fact, but honestly, so do I. Great fun. It changes colors so I could explain to the little ones how temperature affects different materials.

I was so bummed when my putty came and one of the colors did not change. When I asked the company for a replacement, they said they couldn’t because they are a packaged deal. That was disappointing because I don’t want to send back the ones that work for fear that the new package they send will have more defective putty! Other than that though, it smells great and is a great stress reliever at work to play with.

Great texture, no stick or slimy feel, no film or smell left on hands. Kids love it!!

I was looking forward to these because they were color-changing. However, they did not change colors at all. It is all shiny in the container, and it loses that shine when it warms up because you're stretching it and manipulating it, but it doesn't change color. I'm returning them for a refund and will pick something else that I know is proven.

Great manipulative for students. My students really enjoy using these.