Heavyweight Expansion Envelopes offer superior protection for mailing bulky items which are not too heavy. Ideal replacement for costly box or carton. Convenient Flap-Stik closure. Envelopes made of 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, just peel and seal.

On Sale for: $150.22