Sensorik-Schleim-Röhren-Set

The tubes are sealed really well—no leaks at all even after my toddler dropped one. The slow ooze is so mesmerizing I actually found myself watching them while I was on hold on the phone, such a nice little dose of calm.

My three-year-old can’t stop staring at these—the liquid really does move at the perfect slow pace, and the sealed tubes are sturdy enough to survive being dropped on tile. The size is just right for little hands to hold and shake.

The heavy plastic feels sturdy enough, and the ooze does move at a satisfyingly slow pace when you tilt them. That said, at 4.75 inches tall they're smaller than I pictured, so my kids lose interest after a couple minutes. It's fine for the price, just nothing amazing.