Single seam, ideal for heavier contents | Made from high quality durable, weather-resistant material | Incorporates the Versapak tamper evident zip closure | With label patch for franking labels or stamps | Cost effective, reusable alternative to envelopesPDF Invoices are available upon requestThis listing content and imagery in its entirety is Errors and omissions excepted (E&OE) Should you believe the value of this listing is too good to be true, it probably is! Please do drop us a message and we'll be happy to check the content accuracy before purchase