{"product_id":"12x15-5-black-self-seal-poly-mailers-2-5-mil-100-case","title":"12x15.5\" Black Self-Seal Poly Mailers 2.5 Mil - 100\/Case","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003e12 x 15\" black poly mailer, 2.5 mil polyethylene, sold by the case of 100. Opaque colored film for shipments where the brand color, the recipient unboxing experience, or visual sorting in the warehouse matters. Peel-and-seal closure, water-resistant film, and a smooth printable face that accepts standard thermal shipping labels.\u003c\/p\u003e\n\u003ch3\u003eSpecs at a glance\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMailer style\u003c\/th\u003e\n\u003ctd\u003eColored poly mailer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInner dimensions (W x L)\u003c\/th\u003e\n\u003ctd\u003e12 x 15\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFilm thickness\u003c\/th\u003e\n\u003ctd\u003e2.5 mil polyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClosure\u003c\/th\u003e\n\u003ctd\u003ePeel-and-seal adhesive strip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMailers per case\u003c\/th\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cp\u003eBest for ecommerce brands that want a colored mailer to support brand identity at unboxing, 3PLs that color-code outbound shipments by client or service tier, and operations that rely on color for visual sorting at pick and pack stations.\u003c\/p\u003e\n\u003ch3\u003eWhen to use this product\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eBranded ecommerce shipments where the mailer is part of the unboxing.\u003c\/li\u003e\n\u003cli\u003eWarehouse color-coding by client, route, or service level.\u003c\/li\u003e\n\u003cli\u003eLimited-run, seasonal, or campaign-specific shipments.\u003c\/li\u003e\n\u003cli\u003eSoft goods, apparel, accessories, and books where light protection is enough.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to choose something else\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eFor fragile contents that need cushioning, see \u003ca href=\"\/collections\/bubble-mailers\"\u003ebubble mailers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eFor inventory you need to identify without opening, choose a clear option from \u003ca href=\"\/collections\/poly-mailers\"\u003epoly mailers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eFor rigid items, see \u003ca href=\"\/collections\/mailer-boxes\"\u003emailer boxes\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNeed help choosing?\u003c\/h3\u003e\u003cp\u003eNot sure which mailer fits what you ship? Read the \u003ca href=\"\/pages\/mailers-guide\"\u003eMailers Buying Guide\u003c\/a\u003e for a walkthrough of poly, bubble, paper, and rigid options, or use the \u003ca href=\"\/pages\/mailer-vs-box-selector\"\u003eMailer vs. Box selector\u003c\/a\u003e to decide between a flat mailer and a box.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWill the color show through to the inside?\u003c\/strong\u003e\u003cbr\u003eThese mailers are opaque on both sides. The inside surface is the same colored polyethylene as the outside — contents are not visible through the film.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill labels stick to colored film?\u003c\/strong\u003e\u003cbr\u003eYes — the smooth poly surface accepts standard thermal shipping labels. Peel and press at room temperature for best adhesion.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the mailer waterproof?\u003c\/strong\u003e\u003cbr\u003eThe 2.5 mil polyethylene film is water-resistant and protects against splashes, light rain, and humidity in transit. Not rated for submersion.\u003c\/p\u003e\n\u003ch3\u003eRecommended add-ons and related links\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrowse the full \u003ca href=\"\/collections\/poly-mailers\"\u003epoly mailers\u003c\/a\u003e for adjacent sizes, mil thicknesses, and colors.\u003c\/li\u003e\n\u003cli\u003eFor rigid item protection, see \u003ca href=\"\/collections\/bubble-mailers\"\u003ebubble mailers\u003c\/a\u003e or \u003ca href=\"\/collections\/mailer-boxes\"\u003emailer boxes\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSee the broader \u003ca href=\"\/collections\/mailers-envelopes\"\u003emailers \u0026amp; envelopes\u003c\/a\u003e category for paper, rigid, and box mailers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- packrift-enriched --\u003e\n\u003cdiv class=\"packrift-enrichment\"\u003e\n\u003csection class=\"pf-best-for\"\u003e\u003ch3\u003eBest For\u003c\/h3\u003e\n\u003cp\u003eE-commerce brands shipping fashion, cosmetics, and lightweight merchandise need professional packaging that protects products and builds brand perception. These 12 x 15 1\/2\" black poly mailers combine durable 2.5 mil polyethylene construction with eye-catching colored exteriors, making them ideal for brands that want secure transit protection paired with premium unboxing presentation.\u003c\/p\u003e\n\u003cp\u003eThe self-seal design eliminates tape and labor costs while the silver inner lining provides product visibility and moisture protection. High-strength seams resist punctures, tears, and water damage even with overpacked shipments, ensuring your products arrive in perfect condition and your brand reputation stays intact.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"pf-specs\"\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e2.5 Mil Polyethylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e15 1\/2\" x 12\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack Exterior \/ Silver Interior Lining\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eClosing Type\u003c\/th\u003e\n\u003ctd\u003eSelf-Seal Adhesive Strip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecyclable\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection class=\"pf-use-cases\"\u003e\u003ch3\u003eCommon Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eE-commerce apparel and fashion shipping\u003c\/li\u003e\n\u003cli\u003eCosmetics and beauty product packaging\u003c\/li\u003e\n\u003cli\u003eSubscription box and sample mailers\u003c\/li\u003e\n\u003cli\u003eDirect-to-consumer branded unboxing experiences\u003c\/li\u003e\n\u003cli\u003eHigh-volume fulfillment with tamper-evident requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"pf-included\"\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e100 black poly mailers per case (12 x 15 1\/2\")\u003c\/li\u003e\n\u003cli\u003ePre-applied self-seal adhesive strip\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"pf-shipping\"\u003e\u003ch3\u003eShipping and Packaging\u003c\/h3\u003e\n\u003cp\u003eCases ship flat in standard cardboard packaging, minimizing warehouse storage footprint. Each case contains 100 ready-to-use mailers requiring no assembly.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"pf-faq\"\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eWill labels and printing adhere well to the black surface?\u003c\/summary\u003e\u003cp\u003eYes. The outer black polyethylene surface has excellent adhesion for labels, stamps, thermal printing, and custom ink applications, allowing you to add tracking numbers, return addresses, or brand logos without quality loss.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eAre these mailers waterproof and moisture-resistant?\u003c\/summary\u003e\u003cp\u003eAbsolutely. The 2.5 mil polyethylene construction provides comprehensive water and moisture protection during shipping and storage, safeguarding contents from humidity, rain, and ground transport conditions.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use these for heavier items or overpacked shipments?\u003c\/summary\u003e\u003cp\u003eYes. High-strength seams are engineered to withstand overpacking and rough handling while resisting punctures and tears, making these mailers suitable for densely packed shipments without compromising seal integrity.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs the self-seal mechanism reliable, or do I need additional tape?\u003c\/summary\u003e\u003cp\u003eThe self-seal adhesive strip is tamper-evident and fully reliable for standard shipments. Simply peel and press to activate—no tape required. For maximum security on high-value items, additional tape can be applied if desired.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c!-- \/packrift-enriched --\u003e","brand":"Packrift","offers":[{"title":"Default Title","offer_id":53443791978864,"sku":"CPM1215BK","price":29.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/9159\/2048\/files\/CPM1215BK.jpg?v=1774849326","url":"https:\/\/packrift.com\/products\/12x15-5-black-self-seal-poly-mailers-2-5-mil-100-case","provider":"Packrift","version":"1.0","type":"link"}