- Tyvek envelopes provide superior puncture, tear and moisture protection.
 - Constructed from 14 lb. olefin.
 - Ten times stronger than paper envelopes.
 - Feature self-seal closure.
 - Available in plain and First Class printed borders.
 
- Strength Material:
 - 14 lb. Olefin
 
- Shipping Unit:
 - 100 PER CASE
 
- Width:
 - 12.00"
 
- Height:
 - 15.50"