Specifications: Poly Bubble MailerSize #1 Dimensions: 7.25″ x 12″ Usable Space: 7.25″ x 11″ Features: HIGH QUALITY: Durable material with robust bubbles EASY TO USE: Self-sealing (just peel-n-seal) MAXIMUM PROTECTION: Fins on two sides and seamless bottom LIGHTWEIGHT: Save on postage REDUCED PACKAGE LOSS: Perfect surface for ink and labels APPROVED FOR SHIPPING CARRIERS: USPS, FedEx, UPS, DHL, etc.