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Tyvek Envelopes
Lightweight High-Strength Envelopes for Heavy Mailings
Standard paper mailers can split under the pressure of sharp-edged binders, dense legal dossiers, and heavy commercial product samples. JAM Paper Tyvek envelopes feature high-density polyethylene fiber construction for extreme tensile strength while staying remarkably lightweight, helping you reduce postage costs on bulky shipments.
All-Weather Moisture Protection and Tamper Resistance
Spun synthetic fibers form an impenetrable water-resistant barrier against rain and accidental spills. The non-porous material shields vital financial ledgers and sensitive legal contracts from external moisture damage, so your critical records arrive clean and fully intact.
Secure Self-Adhesive Seals Across Standard Sizes
Pressure-sensitive adhesive strips form an instant, permanent contact bond that resists tampering during postal handling. Available in standard 6 x 9, 9 x 12, and 10 x 13 dimensions, these flexible white envelopes expand easily to hold bulky items without bursting along the seams.