Sparco Tyvek Open-End First Class Envelopes

First-class envelopes feature super strong, regular weight Tyvek for secure mailings. Made of moisture-resistant and tear-resistant material.

Sparco Tyvek Open-End First Class Envelopes - First Class Mail - 9 1/2" Width x 12 1/2" Length - Peel & Seal - Tyvek - 100 / Box - White