Kick into action with Ninja Thinking Putty. This putty will get stronger with every stretch! Train and endure to become the ultimate Ninja.

Become a Ninja! Ninja Thinking Putty features a unique formula that builds resistance as you play. This amazing putty actually absorbs your strength—getting tenser and tenser with each stretch—to leave you feeling like a true Ninja.

Thinking Putty is non-toxic, won't dry out, and won't leave a sticky or slippery residue on your fingers, so it's great for stretching, molding, bouncing, tearing, popping and playing by kids and adults alike.