MEGA STICKERS: Great for climate transformation! Did you know that most bullying happens in the restrooms? But studies show that if you decorate restrooms with positive messages, you reduce the amount of bullying as much as 90%! Consider putting positive messages in stairwells and other isolated areas too. MEGA STICKERS come in three sizes and are pre-die-cut. They are printed on marine-grade vinyl so they are durable, waterproof and won't leave adhesive residue when you peel them off.