Color: non-transparent white outside surface and silver inner surface
Premium quality, self sealing.
Superior tear, water, puncture resistant.
4-6 times stronger than normal envelopes.
Heavy duty but light weight to save on shipping.
Strong seams to allow for over-stuffing.
Self stick stamps and labels adhere easily.
Any tamper evident.
Durable, UPS/FedEx/USPS/DHL approved.
Same day ship out.