Self-Sealing Shipping Envelopes are great for shipping light and less fragile products, such as clothing, apparel and accessories, shirts, shoes, jeans, books, supplements and much more! Simply Peel & Seal - Poly mailers contains a strong self-sealing adhesive strip. Simply peel and fold over to seal each package safely and securely. Shipping bags are a cost-effective and efficient way to ship all your packages. Perfect for business and retail use. 12 x 15.5 Optimal size for Clothing/Hoody/Shirt/Jacket.LIGHT WEIGHT but strong, tough & durable to withstand the rough shipping process Poly mailers of perfect size and color : each poly mailer is 12 x 15.5 inches in neutral GREY COLOR, 100 pcs in total, perfect size for non-fragile items, a great helper for your online business. Eliminate the need for costly shipping boxes and tape by using poly mailers instead - and watch the savings add up!