10″ x 13″ – Tamper Evident Tyvek Envelopes

Tamper Evident Tyvek Envelopes

Tyvek® envelopes provide superior puncture, tear and moisture protection.

– Constructed from 14 lb. olefin.
– Ten times stronger than paper envelopes.
– Feature a special seal that once broken, the word “OPENED” appears in red on the flap.