A Science Gift Your Kids Will Love!
A delightful curiosity of science to capture the imagination of all ages, this little gem has ancient properties which produce a natural spin bias. Spin it in one direction and it will continue. Spin it the other way and it will reverse direction all by itself! It also works as a cylinder lens that magnifies vertically, just the thing for the young explorer in your family.
CAUTION - Choking Hazard: For children age 6 years old and above. One Rattleback included.