Instant Snap-Open Filling. Classic Self-Standing Sacks.
Classic self-opening unhandled paper sacks with a square block bottom for grocery, bakery, and takeaway.
Custom SOS Paper Bags (Self-Opening Sacks) are the quintessential unhandled flat-bottom paper bags used across bakeries, grocery stores, pharmacies, coffee roasters, and food delivery services worldwide. Engineered with an automatic self-opening design, a light flick of the wrist opens the bag completely, allowing high-speed order filling in fast-paced retail and kitchen environments.
Constructed from heavy-duty 60 GSM to 120 GSM unbleached natural kraft paper or white bleached paper, these sacks feature deep side gussets and a rigid square block bottom base. This flat base enables the bag to stand upright independently on packing tables. The unhandled top rim can be folded down or sealed with a custom tamper-evident sticker.
Learn more in our [Complete Guide to Custom SOS Paper Bags](/blog/b2b-guide-to-sos-paper-bags).
See how businesses across different sectors use this packaging
SOS bags carry bread loaves, pastries, cookies, and baked goods from bakeries. The flat bottom stands upright on counters for easy filling and customer self-service.
Standard checkout bags in sizes from 1lb to 25lb capacity. Compostable and recyclable alternatives to single-use plastic bags for eco-conscious retailers.
Grease-resistant SOS bags hold burgers, fries, sandwiches, and takeout orders. Flat bottom supports stacked containers without tipping during delivery transport.
SOS bags with tin tie closures package whole bean coffee, loose leaf tea, and dry goods. Resealable closure maintains freshness between customer uses.
Small white SOS bags for prescription medications and health products. Clean white surface with discreet branding for patient privacy in pharmacy retail.
Colored and printed SOS bags serve as party favor bags, candy bags, and gift packaging. Cost-effective festive packaging for events, schools, and celebrations.
Choose materials, printing, and finishing options
Bleached 70 GSM kraft with flat-bottom SOS (self-opening sack) construction. Opens to a square base that stands upright on counters holding up to 8kg of contents.
Unbleached 60 GSM virgin kraft with warm brown tone and visible fiber texture. The classic grocery and bakery SOS bag projecting eco-friendly and artisan quality.
80% post-consumer recycled 70 GSM kraft with natural speckled character. Diverts 3.2 tonnes of waste from landfill per 100,000 bags while maintaining 6kg capacity.
Food-safe kraft with internal grease barrier preventing oil penetration to exterior. Essential for bakeries, delis, and fast food takeout containing oily items.
100 GSM extra-thick kraft for large SOS bags carrying up to 12kg. Multi-ply construction with cross-grain layers for grocery and bulk food applications.
Dyed-in-pulp colored kraft in 8 standard colors without surface printing. Rich color throughout the fiber for boutique retail and brand-specific applications.
Chain-of-custody certified kraft from sustainably managed forests. Carries the FSC label meeting corporate sustainability procurement requirements.
Kraft with die-cut window and clear PLA or glassine patch for contents visibility. Allows customers to see baked goods, produce, or products inside before purchasing.
From concept to delivery in 4 simple steps
Share your requirements and get a detailed quote within 15 minutes during working hours. Our team reviews every project.
Receive a digital 3D mockup. Request unlimited revisions until you're 100% satisfied.
Your packaging enters production. Track progress through your dashboard in real-time.
Free shipping to your door. Standard delivery in 7-14 business days. Need it faster? Rush production delivers in 3-7 business days.
We offer sustainable alternatives for SOS Paper Bags that don't compromise on quality. Choose eco-friendly materials and printing options to reduce your environmental impact.
100% Recyclable
Made from recyclable materials
FSC Certified Options
Responsibly sourced materials
Soy-Based Inks
Eco-friendly printing
Carbon Neutral
Offset shipping available
Complete technical specifications for SOS Paper Bags
| finish types | Natural Unbleached Kraft, Bleached White Kraft, Grease-Resistant Treated, Soft-Touch Matte |
| storage reqs | Store flat in dry conditions at 50°F-80°F (10°C-27°C); keep away from open flames |
| print quality | Vibrant flexographic printing up to 400 DPI using food-safe water-based inks |
| assembly style | Side gussets, serrated top rim, glued side seams, square flat block bottom |
| eco credentials | Made from 100% recycled paper fibers or FSC-certified paper, 100% recyclable & compostable |
| weight capacity | Supports up to 15 lbs depending on bag size and paper GSM |
| material thickness | Paperweight: 60 GSM - 120 GSM heavy kraft paper |
| production location | Printed and converted in the United States |
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