Cheaper, lighter and stronger - PostSafe envelopes are ideal for any mail order, online or eBay business. - LIGHTWEIGHT polythene envelopes minimises postage costs - Available in clear or with white franking band, accepts stamps and labels - Ideal for Direct Mail, brochures, catalogues and Mail Order products - 100% recyclable envelopes Postsafe polythene envelopes are manufactured to the highest quality standards in the UK. Polythene envelopes are strong, less expensive than paper envelopes and cardboard boxes, and the light weight reduces postage costs. All products are weatherproof, tear resistant, and 100% recyclable. The flexible structure wraps around contents and saves space - simple to use with peel and seal closure. All our products are approved by Royal Mail.