Confidential and secure content: opaque, waterproof and 100% moisture-resistant white plastic envelopes that guarantee the contents and confidentiality of your package. Variety of uses: these mailing envelopes are ideal for private commercial use. Quite useful for documents, books and soft items (clothing and textiles such as t-shirts, blankets, scarves or other unbreakable items) .Easy adhesive closure: the shipping envelopes are self-sealing for easy packaging with a secure, tamper-proof, waterproof and dirt-resistant seal.Eco-friendly material: environmentally friendly plastic shipping bags, with up to 70% recycled material. All components are 100% recyclable.