Features: Nice stickers: Pasting these physics chemistry graffiti stickers at different places in daily life, like laptops, water bottles, skateboards and more in order to inspire good state anytime and anywhere.They can be applied as prizes in school classroom.Quality material: The mixed school science and astronaut stickers are made of PVC, which are waterproof, and can be peeled off without leaving any traces.Specifications: Material: PVC Color: as pictures shown Package includes: 200 x Stickers Notes: Manual measurement, please allow slight errors on size.The colors may exist slight difference due to different screens.