Zeal X Holographic Padded Envelopes is made of polyethylene material, reflective metal foil outer layer with foam lining. Resistant to wear, tear and damage, providing excellent protection for contents. The opaque surface enhances the privacy of the product, and each bubble mailer comes with a powerful self-sealing adhesive strip that simply strips and folds to seal each package safely and securely. The self-sealing adhesive is strong, tampering marks after opening, and the transport bag has excellent waterproof effect, even if your package encountered rainy, snowy or foggy days, your package can be safely delivered to the destination. This metal bubble mailer is lined with strong bubbles that help to provide excellent protection and cushioning for your products during transportation. Perfect for shipping jewelry, electronics, cosmetics, personal care products, clothing, documents, photos and more.