Sturdy & Durable Construction: The thicken poly mailer 12x15.5 inch covers with poly material with 2.4mil Thickness. Beside, the plastic mailing envelopes features with tearing proof effects. Product Features: Vapulcio mailers poly bags are equipped with a strong self-sealing adhesive strip. The thick material also makes it opaque and waterproof. Providing you with privacy protection. Easy and Convenient: These shipping envelopes are easy to use and require no additional packaging materials. Polymailers are lightweight and space-saving. Widely Use: Vapulcio mailers bags are great for clothing boutiques, office supplies, family, crafts, and warehouses. Size Selection Suggestions: Length:product length (in) + product height (in) + 2 in remainder. Width:product width (in) + product height (in) + 1 in remainder. Note: Both length and width needto fulfill the conditions. Vapulcio Poly Mailers 12x15.5 inch 50 Pcs, Plastic Mailing Envelopes with 2.4mil Thickness, Waterproof and Tear-resistant Shipping Bags for Clothing, Tamper Proof Self-Seal Mailers Poly Bags, Teal