9 x 20 cm matte vinyl sticker sheet
The material is slightly thicker and more durable than your average deco sticker, so these should hold up well on phones, laptops, and toploaders, but may not be suitable for journaling. (But don't let me tell you what to do!)
Please note that the digital mockup may not reflect the final product, and there may be variation between batches due to the manufacturing process.