Large files of legal, financial or business documents need special handling. You want to make sure they get to their destination unharmed. But they also need to fit in the envelope – and with that much paper, you want to make sure you’re not going to be adding ounces with packaging. The choice is clear. Take your Stamps.com account to a new level and use Tyvek® White Self-Seal Side Loading Expansion Envelopes!

• 10” x 13”, 10” x 15”, and 12” x 16” sizes to accommodate any document need
• All sizes include a 2” expansion gusset for larger files
• First Class border printing
• Constructed of Tyvek^® -- ten times stronger than paper, highly resistant to punctures, tears and moisture
• Can be written on with permanent markers
• Lightweight material reduces postage costs
• Closes quickly and securely with a self-adhesive strip
• Meets USPS regulations