Product Description 50-pack bubble envelopes, padded, polyethylene, self-sealing, white. Product Highlights: 1. These bubble envelopes add a bright touch to your mail, making them stand out from the crowd and unlike ordinary envelopes. Your customers will look forward to receiving these beautiful white envelopes. These bubble envelopes are lightweight and portable, and won't increase your shipping costs. 2. Tear-resistant envelopes: These bubble envelopes have a sturdy and durable surface, making them an ideal alternative to paper envelopes, which are less likely to tear when packing sharp, heavy, or irregularly shaped items. Furthermore, they are made with a multi-layered polyethylene film, providing excellent protection during transport. 3. Multi-purpose bubble envelopes: You can use these bubble envelopes to mail cosmetics, paintings, fashion accessories, jewelry, medicines, seeds and bulbs, and more. They have ample padding to protect fragile items during transport. The laminated surface makes it easy to attach self-adhesive stamps and address labels. 4. Self-adhesive envelopes: White polyethylene bubble envelopes with a self-adhesive tamper-evident seal. Once sealed, the envelope cannot be opened without leaving obvious signs of tampering. The smooth surface of the envelope makes it easy to affix stamps and address labels. Specifications: Color: Black Size: 11x15+4 cm, 15x20x4 cm, 16x23+4 cm, 50 envelopes/pack. Material: New PE material + pearlescent film Contains: 50 bubble envelopes