The Cubic Self-Sealing Envelopes – 11 × 5 Inch are durable, waterproof, and tear-resistant poly mailers designed for secure shipping. Featuring a strong self-adhesive seal, they protect small documents and accessories from rain, dust, and damage—perfect for e-commerce, courier, and office packaging.

• Size: 11 × 5 inches – ideal for small documents, accessories, and parcels
• Secure self-sealing closure for tamper-proof and leak-proof packaging
• Durable & tear-resistant poly material prevents punctures and rips
• Waterproof & weather-resistant for all-season shipping safety
• Perfect for e-commerce, offices, and reliable shipping needs