The overall size is 148mm x 100mm, the same size as a postcard. The material is water-resistant PVC. For those who want to sleep early, and for those who want to put someone to sleep early, this will dramatically improve your sleep quality! Size: It's a size that can even be stuck on an iPhone! Material: Because it's water-resistant, it's also recommended to stick it on a bicycle, etc. Point: Tokusatsu fans will be drawn to the font. Recommended for small gifts. #beams #sticker #gosleep