Using the Heroes of Goo Jit Zu Deep Goo Sea Thrash figure is easy and fun. To activate Thrash's 'Chomp Attack', simply pull his head back and his jaws will open wide. You can use this to pretend to battle against other villains in the series. For the stretchy feature, grab Thrash firmly and pull gently. You can stretch him up to 3 times his size, but be careful not to pull too hard to avoid damaging him. When you let go, he'll bounce back to his original shape. As for maintenance, keep the figure away from sharp objects that could puncture the gel. If it gets dirty, you can gently wipe it with a damp cloth. Remember, this figure is for kids' play, so adult supervision is recommended, especially for younger children, to ensure safe use.