Set of 50 Grey Poly Mailers (6×9") - Heavy Duty Shipping Envelopes Boost your shipping game with this bulk set of 50 high-quality poly mailers! These are perfect for small businesses or casual sellers who need reliable, lightweight packaging to keep shipping costs low. The 6×9 inch size is the "sweet spot" for jewelry, small accessories, cosmetics, or lightweight clothing items. Key Features: Quantity: 50 mailers total. Size: 6 × 9 inches (standard small size). Durability: Water-resistant and tear-proof material to protect your items in transit. Security: Features a strong self-seal adhesive strip—no tape needed! Just peel and stick. Privacy: Opaque grey exterior with a dark interior lining to ensure contents stay private. Condition: Brand new, never used. Fast shipping! I usually drop off packages within 24 hours.