Fidget Puzzle Box, No. 6 decor as well as works from

as well as works from today's leading illustrators

and wonder that surround us every day

this wonderful book has inspired generations of mathematicians

this double-sided 139-piece puzzle can flip inside out on itself and continue seamlessly

Fidget Puzzle Box, No. 6 decor as well as works fromOnce you figure out the trick to this box, it really is quite easy to open Until then, you might fidget all day without unlocking the secret. The handsome walnut exterior looks great on any desk or coffee table and the hidden chamber inside is perfect for stashing treasures. Simple enough for beginners but challenging for experts as well. About 2" cubed.