QUAR4210, Quality Park Tyvek First Class Expansion Envelopes QUA R4210

Quality Park TYVEK & Tear-Resistant Envelopes: Quality Park R4210 Tyvek Open-End Envelope, 1st Class, 10'' x 13'' x 1-1/2'', 100/CT, WE, QUAR4210, First-class Expansion Envelopes with heavyweight Tyvek offer superior protection for mailing bulky items which are not too heavy. Ideal replacement for costly box or carton. Envelopes feature open-end style and convenient Flap-Stik closure. Envelopes with DuPont Tyvek won't rip, tear or puncture. Much stronger and more secure than traditional paper envelopes. Water-resistant and moisture-resistant. Easy to use. Peel and seal. UPC 85227142108