Flexatube is our first edition work, for children over 6 years old and the whole family. Flexatube is a puzzle aim of which is to turn inside out by folding only.

Based on famous prof A.H. Stone paper folding discover, we built strong and nice textile object.

The Flexatube is considered one of the best puzzles because of its external - internal mathematical harmony.

From averagely difficult to solve to yet unsolved, depending whether you plan to find one way to turn in out; you plan to find the 3 known routines to turn in out; or even you plan to prove there is no other way to turn in out.