Mood rings were invented in 1967 by a man named Marvin Wernick, who saw a great idea for a toy when he saw one of his friends take a child's temperature by using a strip of thermotropic material. A mood ring is essentially a liquid thermometer that changes color according to the temperature on the wearer's skin. It is thought that this may indicate the mood of the wearer, as some claim that body heat fluctuates with the emotional state of the wearer. Highly recommended when trying to find out what your loved one is really feeling--or if you need a small but neat stocking stuffer, gag gift or novelty toy!
Note: Ring comes in a variety of sizes. Although we do try to accommodate requests for specific sizes, we cannot guarantee which size will be sent to customer.
Warning: Choking hazard due to small parts. Not for children under 3 years old.
Great premium general purpose KingSeal Nitrile gloves in size SMALL. Not for medical use.
These extra-large, powder-free, 5mil Nitrile Exam Gloves are designed and manufactured for superior comfort and protection.
Box of 100 X-LARGE nitrile exam gloves.
Durable, anti-fog safety glasses that fit comfortably on any head size.
These goggles meet the American National Standards Institution (ANSI Z87.1) and Canadian Standards (CSA Z94.3) regulations.
This set includes three (3) N95 FDA registered and NIOSH approved and respirators.
Check out this amazing renewable energy science kit featuring the wonders of hydroelectric power!
This magic bird defies gravity before your very eyes!
Learn about detective science through this fun fingerprinting kit!
This simple but amusing magnetic toy will keep you busy for hours!
This project book and sample kit introduces you to shape-memory alloy technology!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
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.