Clear Shipping Label/Invoice Envelopes-- 7" x 5.5" - Pack of 100-NEW This 2 mil thick clear packing list envelopes are tear-resistant to allow over-stuffing. Has a white back and clear front face for easy viewing of enclosed documents. Easy application by simply peeling off the paper backing and applying it to the package. TEAR PROOF/TAMPER & WATERPROOF SURFACE/CLEAR WINDOW/ VERSATILE. BRAND NEW PACK OF 100.