The sticker is approximately 2.5 x 3.5 inches. Our stickers are dishwasher safe and approved for outdoor use! The durable, matte, outer coating is made to withstand all the elements, including water, heat, and UV exposure. We still recommend hand washing products that contain the stickers (ie. water bottles) to prolong the life of their adhesive. For best results, apply your stickers to flat, dry surfaces and allow the adhesive to set for 48 hours before exposing to water.