Expandable Mailer, Self-adhesive Closure, 13.5 X 15.37 X 2.5, Kraft, 250/cartonBoxes have been a shipping staple for years, but what if you don't need all of that space? If you are shipping smaller items, consider using Elementree Expandable Mailers. These kraft mailers feature a 2. 5" gusset making it ideal for clothing, documents and other soft goods. With a sturdy kraft paper construction, and water resistant barrier your shipment will arrive safely to its destination. Ship Wisely with Elementree.