"Thank You For Helping This Small Business Grow" Kawaii Plant Thank You Stickers - 1.67" Round Circle Labels - Water Resistant Our 1.67 inch hand drawn/designed sticker sheets are the perfect way to add a special "thank you." Stick them on envelopes, polybags, or business cards to add a little something special. MATERIAL: • Paper: Our paper stickers use waterproof ink on thin matte (non-waterproof) paper. They can withstand exposure to water for short periods of time. The ink will not run, but water exposure will eventually wear the paper down.