The Sparco Brand Clasp Envelopes are rectangular in shape, with a clasp closure for secure storage. Measuring 10 x 15 inches, these brown Kraft envelopes are perfect for various business and industrial applications. Made of paper, they come in a box of 100 and are manufactured by Sparco in the United States. The product dimensions are 18 x 3.75 x 10.14 inches, and each envelope weighs 5.55 pounds, making it a durable and practical choice for shipping and packaging needs.