【Perfect 6x10 Size】These black bubble mailers measure 6x10 inches externally (5.2x9.8" inside), ideal for shipping jewelry, cosmetics, phone cases, photos, and handmade crafts. The compact size eliminates wasted space in packages.【Weatherproof & Secure】Waterproof and tear-resistant construction protects against rain and rough handling. The self-sealing adhesive creates a tamper-evident closure that stays sealed in all weather conditions.【High-Value Packaging Solution】This bulk set provides a practical quantity of 6x10 bubble mailers for frequent shippers. The lightweight design (0.3oz each) offers an efficient shipping option.【Built-in Bubble Protection】Each padded envelope features durable polyethylene bubble lining that cushions items automatically. No need for additional packing materials - just place your item inside and seal.【Easy to Use】Simply peel, fold, and press to seal these bubble envelopes. The matte black surface accepts labels cleanly, perfect for eCommerce businesses and gift senders.