12 x 15 1/2" Green Tyvek Envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Colorful envelopes make your mailing stand out. Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal...
12 x 15 1/2" Green Tyvek Envelopes. Tyvek envelopes provide superior puncture, tear and moisture protection. Colorful envelopes make your mailing stand out. Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal...