Tyvek Open Side Expansion Envelopes offer superior protection for mailing bulky items. Ideal replacement for box carton. Convenient Flap-Stik Closure requires no moisture to seal. First Class border. Envelopes of DuPont Tyvek won?t rip, tear or puncture. Much stronger and more secure than paper envelopes. Water-resistant and moisture-resistant. Environmentally safe.

On Sale for: $162.40