Sparco Plain Back 5.5" Waterproof Envelopes

Plain back envelope features a waterproof and oil-proof design to ensure your package is secure. Self-adhesive allows a quick, easy way to seal your package without the need to moisten. Top layer is made of an LDPE 45 micron adhesive.

Sparco Plain Back 5.5" Waterproof Envelopes - Packing List - 5 1/2" Width x 4 1/2" Length - Self-adhesive Seal - Low Density Polyethylene (LDPE) - 1000 / Box - White