High-quality weight with a hook fitted through the center allow you to hook weights together in tandem or use them one at a time.
Pass-through hooks are included on both sides of the weight!
Working model representing the sun, earth, and moon and their relationships.
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
This adapter-powered butterfly uses Flexinor wires to create a realistic visual effect!
See the solar system in action!
Comprehensive collection of 30 fossils.
This SUPER Erector Construction set is one of the best you'll find anywhere!
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.