Bubble Mailers - 8.5x12, 50/Case
$50.53
/ case of 50$1.01 per mailer
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
8 1/2" × 12"
Board / material
Polyethylene
Color
White
Freight class
Class 300
Specifications
| Inside dimensions | 8 1/2" × 12" (L × W) |
|---|---|
| Board / material | Polyethylene |
| Color | White |
| Sold as | Case of 50 |
| Order in multiples of | 1 |
| Case weight | 3.45 lb |
| Outer carton (shipping) | 19.5 × 17.0 × 12.25 in |
| LTL freight class | Class 300 |
| GTIN | 848109046082 |
| SKU | B921 |
About this item
SKU B921 — 8 1/2" × 12", Polyethylene, White. Sold as a case of 50, shipped from US warehouses.
The 8.5x12" Bubble Lined Poly Mailers - 5/16" Cushioning is a bubble mailer for small e-commerce shipments, media, jewelry boxes, parts, photos, and documents that need built-in cushioning. Listed specs include size 8.5" x 12"; poly material; case of 50. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Bubble mailers and padded mailers: Good fit for shipping books, cosmetics, accessories, samples, small parts, and other items that need light cushioning. These mailers help ecommerce teams and small businesses choose protective, right-sized packaging for common fulfillment workflows.
Common questions
Are these mailers UPS and FedEx eligible for dimensional weight calculations?
Yes. The lightweight polyethylene construction with integrated bubble lining keeps these mailers under dimensional weight thresholds, helping you avoid surcharges on UPS and FedEx shipments compared to heavier carton alternatives.
What makes 5/16" bubble protection twice as effective as standard poly mailers?
The engineered 5/16" bubble cell size provides shock absorption and impact resistance. This optimal bubble diameter distributes impact force across more cells, protecting delicate items like electronics and jewelry from drops and handling damage during transit.
How does the self-sealing closure improve packing efficiency?
The integrated peel-and-seal adhesive strip eliminates the need for tape, tape dispensers, and additional sealing steps. Packers simply press the flap to seal, reducing pack time by up to 30% and minimizing labor costs in high-volume fulfillment operations.
Can these mailers withstand outdoor conditions and moisture?
Yes. The polyethylene construction provides weatherproof and waterproof protection, keeping contents dry during transit and storage. This makes them ideal for multi-leg shipments and last-mile delivery scenarios where mailers may be exposed to rain or humidity.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.