The automatic yo-yo is here! Featuring Auto-Return Technology, Reflex™ automatically returns to the hand without having to tug the string! Utilizing a centrifugal clutch, Reflex returns automatically when it reaches the end of its spin. Reflex is a take-apart design featuring a high speed trans-axle for longer spin time, light-weight body, and a wide string gap that makes learning tricks easy! This model is perfect for beginners; Reflex is often referred to as a 'yo-yo with training wheels'!
Discover a world of kaleidoscopic effects within this perfectly clear prism of the Light Crystal!
A touch of joy. A touch of science. Light responds to your touch and to the music in your room!
Great microscope for viewing both slides and 3D objects such as flowers, bugs, rocks and more. Includes all accessories!
This mirascope creates a 3D hologram image!
Ever wonder how to survive in the wilderness? These cards can help!
This quality Dobsonian style telescope features a 76 mm aperture reflector optical tube.
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.