Look who's joined the Heroes of Goo Jit Zu - Sonic the Hedgehog's former rival and now best friend Knuckles! Now he's Super Stretchy! Stretch Knuckles has jumped out of the screen and into your hands to become super stretchy! Squeeze, stretch and play with him like never before! Grab him by his limbs and stretch out his arms and legs. Wow! He can up to 3 times his size! (His arms can stretch up to 40cm!) Let him go and watch him return to his original shape and size!