Poly Bubble BAG FOR MAILS DIFFERENT SIZE 7."x9"/12.8 x14.06 / 12

Poly Bubble Mailer Bags - Assorted Sizes. Quantity: 25 Pieces Total (assortment of the three sizes listed) Sizes (Likely in Inches): Small: 7" x 9" (Length x Width when flat) Medium: 12.8" x 14.06" (This is an unusual dimension, possibly a metric conversion rounded to inches. It is very close to 13" x 14") Large: 12.8" x 14.06" (This is listed twice, which may be a typo in the original description. It's more likely a third, larger size is intended, such as 14" x 19" or similar, which is common in assortments. If not a typo, the pack contains only two sizes.) Material: Polyethylene (plastic) bubble mailer with an air bubble cushioning layer inside. Closure: Self-sealing adhesive strip (peel-and-stick). Purpose: Ideal for shipping books, small electronics, DVDs, cosmetics, crafts, and other items that need lightweight protection from bumps and scratches. Water-Resistant: Provides basic protection from moisture. This type of mixed pack is popular with small businesses, eBay/Etsy sellers, or individuals who ship a variety of items and don't want to buy large quantities of a single size. The duplicate listing of "12.8 x 14.06" is almost certainly an error in the source description. To be sure of what you're getting, you should: Check the product images for visual size differences. Look for a size chart or clarification in the listing details. Contact the seller to confirm the exact three sizes included in the 50-piece pack. You are looking at a 25-pack of self-sealing bubble mailers in a mix of sizes, suitable for general-purpose shipping and mailing.