VALUE PACK: It comes with 1500pcs clear envelope seals on an easily distributed roll, sufficient quantity to meet your different needs. Each measures 1in diameter, proper size for various cards, boxes, packages and envelopes. HIGH DURABILITY: Non-toxic polystyrene stickers with premium adhesive, keep your seal sturdy for a longer lifespan than other paper stickers. Mark on these labels with an oil-based marker is also no problem. EASY TO USE: It comes in an easily distributed roll with perforation line, easy to peel off and stick wherever you want, done! Strong adhesive also allows to stick to most surfaces. Self-adhesive stickers allow you to stick to anywhere you want. WIDE APPLICATION: Self-adhesive stickers could stick well on envelopes, folding boxes and most surfaces. Perfect to seal envelopes, small packages, retail packaging, brochures, gift boxes, plastic bags and most clean surfaces. LIFE ASSISTANT: It is perfect for helping you attach notes to wherever you want them to be, which makes sorting items much easier in daily life. A small but great helper for home sorting, office organization and business display, organizing your daily life easier and tidy.