500 PC 4X8 Inches Poly Bubble Mailers Shipping Padded Envelopes Self Seal Waterproof Cushion Envelopes Waterproof Grey #000Durable & Secure Protection: Made from high quality poly material with a bubble lining to ensure your items stay safe from scratches, impacts, and moisture during shipping. Waterproof & Weather Resistant: Protects contents from rain, snow, and other elements, ensuring items stay dry and intact regardless of the weather. Self Sealing Closure: Features a peel and seal adhesive strip for quick and easy closure, saving you time and effort during packing.