Think Fun Brain Fitness Knot So Fast Innovative Knot Tying Game with 40 Challenges HIGH QUALITY - Knot so Fast is a knot tying race game that Includes 4 color ropes, 2 rings and 40 challenges. CLEAR INSTRUCTIONS  Easy to learn with a clear, high quality instruction manual. You can start playing immediately! DEVELOPS CRITICAL SKILLS - Learn teamwork, spatial reasoning and dexterity through fun gameplay. COMES WITH MULTI-LEVEL CHALLENGES - Brain Fitness Knot So Fast comes with 40 beginner to expert challenges that become increasingly difficult as you play through them.