Packaging: You will receive 100 pieces of 6.5 X 4.5 inch (16.51x11.43 cm) rigid envelopes and 5 pieces of stickers, providing a plentiful supply for everyday use and replacement. The included stickers allow you to mark reminders and enhance the protection of your contents High Quality Material: These sturdy cardboard mailers are made from 350 gsm cardboard for maximum protection during transit. The reinforced construction prevents bending, crushing and scratching, whilst the handy tear strip ensures easy opening without damaging the contents Easy To Seal And Peal: Each flat mailer has a self-adhesive seal that uses a strong sealing adhesive, eliminating the need to lick extra glue or water to moisten it. The tear strip design of the flat mailer also helps you open the package easily Secure And Protect: Keep your trading card, art prints, photos, media, jewelry and documents safe in transit with these protective cardboard mailers. Each hard mailer has a self-adhesive seal that is easy to peel, seal and press for a reliable closure that will securely wrap your valuables Versatile Usage: Perfect for a variety of occasions, these heavy duty mailer envelopes mailers are suitable for home use, graduation, and more, aligning with the diverse needs of men and other target audiences CXIIPOL 100 Pack Rigid Mailers 4.5x6.5 Inch Self Seal Document Mailers, Protective Flat Cardboard Sturdy White Photography Envelopes for Photos, Document, Trading Card, Coins, Stamps