Features: Premium Material: Crafted from a 4-layer composite polyethylene bubble film, these mailers are water-resistant, moisture-resistant, tear-resistant, and resilient against shaking and falls. Best Protection: The interior of the padded mailers is equipped with bubbles and a reinforced 1cm edge to offer cushioning, minimizing shipping damage and ensuring packages arrive in excellent condition. Tight Seal and Safety: Featuring a widened 4cm sealing flap, these mailers guarantee that the edges won't split during transit. The strong adhesive provides a reliable, tamper-evident seal, safeguarding your shipment from damage and tampering until delivery. Widely Used: Available in 11 sizes, these bubble mailers are perfect for shipping a wide variety of items. Suitable for use in offices, homes, shops, schools, and anywhere shipping needs arise. Approved by USPS, UPS, DHL, and FedEx. Specifications: Type: Poly Bubble Mailers Material: Polyethylene film with bubbles, 100% recyclable Color: White Sealing Flap: 4cm Sizes: - #000: 12×18+4cm, Exterior Space: 4" x 8", Interior Space (Useable Space): 4" x 7" - #T: 16×16+4cm, Exterior Space: 5" x 7", Interior Space (Useable Space): 5" x 6" - #W: 15×18+4cm, Exterior Space: 5" x 8", Interior Space (Useable Space): 5" x 7" - #X: 15×20+4cm, Exterior Space: 5" x 9", Interior Space (Useable Space): 5" x 8" - #00: 16×22+4cm, Exterior Space: 5" x 10", Interior Space (Useable Space): 5" x 9" - #0: 18×23+4cm, Exterior Space: 6" x 10", Interior Space (Useable Space): 6" x 9" - #DVD: 20×25+4cm, Exterior Space: 7½" x 10", Interior Space (Useable Space): 6¾" x 9" - #CD: 20×20+4cm, Exterior Space: 7¼" x 8", Interior Space (Useable Space): 7¼" x 7" - #1: 19×28+4cm, Exterior Space: 7¼" x 12", Interior Space (Useable Space): 7¼" x 11" - #2: 23×28+4cm, Exterior Space: 8½" x 12", Interior Space (Useable Space): 8½" x 11" - #3: 26×36+4cm, Exterior Space: 8½" x 14½", Interior Space (Useable Space): 8½" x 13½"