The 4×8 bubble mailers 200pcs outer size is 4×7 inch,while the inner size is 4×7 inch.bubble envelopes 4×8 200pcs are great for packing invoices, photos, trading card,sports card, passport,office supplies,jewelry,lips,cosmetic,small handicrafts,small fashion , key chain,cases and more. Bulk Pack: 200pcs black poly bubble mailers, perfect for and packaging small to medium-sized items Durable Construction: Made with waterproof outer layer and bubble cushioning to protect contents during transit Convenient Design: -seal adhesive strip for easy closure, no taping required Multipurpose: Suitable for mailing, , packaging, storage, and organization needs Size: Each mailer measures 4 inches x 8 inches, ideal for small products or documents