Acid-free archival quality envelopes Smead Envelopes are perfect for long term storage of important documents. Heavy-duty poly material is tear-proof and water-resistant so materials are protected. An assortment of bright translucent colors make for easy organization and color-coding. Tough and big these side-loading envelopes boast sturdy gussets that expand up to 1-1/4” to accommodate bulkier materials or growing projects. A hook-and-loop closure is designed for everyday use. Assortment contains blue green purple red smoke and yellow. Sold as 6 pack.