This xUmp.com exclusive T-shirt is perfect for dressing ’spooky’! The high-quality Gildan Ultra Cotton heavy weight shirt is 100% pre-shrunk cotton. It features a cool glow-in-the-dark skeleton design, making it a perfect choice for Halloween costumes, Halloween horror nights, and related Halloween gag items and novelty prizes.
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
A cool kit that helps you build your very own robotic arm!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Working model representing the sun, earth, and moon and their relationships.
Find the hidden crystals when you open your own geodes from this fun set.
Explore the wonders of wind power with this amazing kit!