Hey, these Aviditi mailers are exactly what you need for shipping all kinds of stuff! They're 11.5 inches long by 9 inches wide - perfect for documents, photos, small products, you name it. The self-seal feature is super convenient - just peel and stick, no licking required. They come in a case of 25, which is great if you do a lot of shipping or just want to stock up. Made from durable material that holds up well during shipping, so your items stay protected. The white color looks professional for business mailings. Honestly, these are one of those basic supplies that every home office or small business should have on hand. They meet industry standards and are just really reliable for everyday shipping needs. Whether you're sending out eBay orders, business correspondence, or care packages to friends, these mailers get the job done without any fuss. Simple, effective, and affordable - what more could you want from shipping supplies?