Butterfly Magic Speed Cube Puzzles, ABS Ultra-smooth Master Twist Cube, Brain Teaser Toys & Christmas Birthday Gifts by YKL WORLD (Black) [COOL PUZZLE GAME]: YKL WORLD Speed Cube can foster your kid's sense of space, activate the imagination and creativity. Perfect puzzle for brain teaser, brings more challenges and provides hours of fun time. [ECO FRIENDLY&HEALTHY MATERIAL]: It comes with eco-friendly ABS and PVC sticker material of premium quality, No poison, no special smell. [VERITABLE SPEED CUBES]: Edges without burrs. Rounded blocks. Have lubrication treatment. Smoothly and faster turning. How fast you are, how fast it is! The cube will not fall apart. [GREAT GIFT IDEA]: It makes a perfect gift idea for kids and adults. Perfect Christmas/Birthday gift for family, neighbors, and friends. [FULL MONEY BACK GURANTEE]:Any quality problems, just contact us, we will offer full refund! 100% satisfaction! Go ahead and buy your very own YKL WORLD speed cube!