[WALL STICKER 80CM ABOVE THE GROUND]: Please let the bottom stickers 80cm above the ground, as our ruler starts from 80cm and can avoid interfering with the ground cleaning and to protect it from accidental damage.[ASTRONAUT GROWTH CHART]: The growth chart adopts astronaut themed design, making him fall in love with measuring his height.[WATERPROOF PVC MATERIAL]: Made of durable and waterproof pvc material, can be pasted on any clean, smooth, and dry surfacecan roll up for easy storage.[GROWTH CHART SIZE]: The height Chart Measuring range is 80cm to 180cm. The height measure ruler sticker is about 30.4cm wide, 90.4cm long, 2mm thick, 2pcs/set.[ACCOMPANYING HIM IN HIS GROWTH]: Every moment that records his height is an intimate moment for you, and it is also a proof that you accompany him in his growth.