Sparco Plain Back 7" Envelopes - Packing List - 7" Width x 5 1/2" Length - 70 g/m² - Self-adhesive Seal - Paper, Low Density Polyethylene (LDPE) - 1000 / Box - White

Plain back envelope features a waterproof design to ensure your package is secure. Self-adhesive offers a quick and easy way to seal your package. Top layer is made of an LDPE 45 micron adhesive and an LDPE 30 micron adhesive bottom layer. Adhesive measures 25 gsm hot melt, and the release paper measures 70 gsm.