【Perfect Size】The black bubble mailers outer size is 4x8 inch, while the inner size is 4x7 inch. These small padded mailers are easy to use, not requiring extra packaging material. Simply peel and fold over to seal each package safely and securely. 【Economical & Convenient】Padded mailers are an affordable alternative to shipping boxes, and they will soften the impact of handling while your package is in transit,keeping your customer's items safe. Our padded mailers are easy to use, just simply pull off the strip from the padded envelope and press closed. 【Waterproof & Self Sealing】4x8 Small Bubble mailer has real water resistance with strong self-adhesive,please don't worry! If your package meets rainy day, waterproof bubble envelopes can protect your customer's packages from rain or damage. 【Cushioning Mailers】Our bubble mailers are lined with 80gsm bubble with unique air cellular layers and all-round strong air bubble technology, helping absorb shock during shipment. Keeping your products safety and make your customer no complaint. 【Sturdy Construction】Metronic mailing envelopes are crafted with only the finest materials. These small padded mailers are tear-resistant, puncture-proof,which exceptionally protect your packages. Reassured mail products, supplies, gifts and more from your online shop or home based business. ASIN B0F6N1RS2W Size 4X8'' 1000PC Color Black Style Bubble Occasion Anniversary, Baby Shower, Bridal Shower, Graduation, Wedding Brand Name METRONIC Item Shape Rectangular Model Name METRONIC Unit Count 1000.0 Count Item Weight 1 Grams Closure Type Self-Seal Manufacturer METRONIC Material Type Polyethylene (PE) Occasion Type Anniversary, Birthday, Engagement, Father's Day, Mother's Day Number of Items 1000 Additional Features Lightweight, Padded, Self-Adhesive Closure, Tamper Proof, Tear Resistant Item Dimensions L x W 1 L x 1 W