Your Trusted Custom Cooler Bags Manufacturer
High-performance insulated cooler bags for retail, delivery, and outdoor brands. Engineered for maximum ice retention, leak-proof reliability, and rugged durability.
OEM/ODM customization
Logo, sizes, accessories, packaging specs
Thermal performance
Insulation build + zipper strategy + seam integrity
Quality control
Inline checks and AQL final inspection
Export-ready delivery
Labeling, carton marks, shipping options
Spec snapshot
A fast engineering view of what matters for sourcing, quoting, and repeatable production.
| Item | Typical | Notes |
|---|---|---|
| Ice retention target | 6–12h (promo) / 24h (standard) / 48–72h (premium) | Depends on insulation thickness + zipper + seam strategy |
| Insulation thickness | 5–8mm / 10–15mm / 20–25mm+ | Closed-cell foam improves retention and reduces water absorption |
| Liner strategy | PEVA/TPU liner with welded seams | Leak-proof and easier cleaning for food/medical programs |
| Zipper options | standard / water-resistant / airtight | Zipper choice changes retention and leakage risk |
| Leak control | welded liner + reinforced drain design (by spec) | Prevent seepage at corners and zipper ends |
| Typical MOQ | 300–1000 pcs | Depends on printing, zipper, custom colors, and insulation build |
| Sampling lead time | 7–15 days | Faster when using existing foam/liner tooling |
Thermal architecture
Ice retention is not one material. It is a layered system: shell, insulation, liner, seams, and zipper strategy.
| Layer | Typical options | What it controls | Notes |
|---|---|---|---|
| Outer shell | 840D TPU nylon / coated polyester / RPET options | abrasion, puncture, cleanability, brand feel | Boat/rough outdoor programs prefer TPU shells |
| Insulation core | EPE/EVA/NBR foam (5–25mm+) | retention hours, shape stability | Thickness & density must match carry weight and cost |
| Radiant barrier (optional) | aluminum film / reflective layer | heat transfer reduction | Useful for longer retention claims |
| Inner liner | food-grade PEVA / TPU | leak-proof, odor control, cleanability | Welded seams reduce leaking at fold corners |
| Seams & zipper system | welded liner seams + zipper selection | leak risk + thermal leakage path | Often the real failure point in competitor products |
Capacity & dimensions reference
Standard size options for cooler bags. We can also customize dimensions to fit your specific gear.
| Volume | Typical Dimensions | Best For |
|---|---|---|
| 12 Cans (10L) | 30 x 20 x 25 cm | Personal lunch, short beach trips |
| 24 Cans (20L) | 38 x 25 x 30 cm | Family picnics, day-long outings |
| 40+ Cans (35L+) | 45 x 30 x 35 cm | Camping, tailgating, food delivery |
Seams & closures (engineering choices)
Waterproof or odor-proof performance usually fails at seams and zippers. This table sets the right expectations early.
| Element | Options | Best for | Notes |
|---|---|---|---|
| Inner liner seams | RF/HF welding / taped + stitched | leak-proof premium coolers / cost-driven coolers | Welded liner reduces micro-leaks at corners |
| Zipper | standard / water-resistant / airtight | lunch/retail / outdoor premium / 48–72h retention claims | Airtight zippers improve retention but increase cost and assembly time |
| Corner construction | folded liner / gusseted liner / molded corner (by spec) | delivery and heavy-use programs | Corners are the highest leakage risk; validate with inversion test |
| Bottom reinforcement | TPU base / EVA base / skid panel | camping, boat, golf cart | Improves wear life and shape control |
Materials & fabrics
Material choice drives performance, durability, finishing, and target price point.
| Fabric | Waterproof | Cost | Notes |
|---|---|---|---|
| Outer: 840D TPU Nylon | 100% Waterproof/Weldable | $8.00 - $12.00 / m² | Puncture-resistant outer shell for premium Yeti-style coolers. |
| Insulation: NBR / EPE Foam | N/A (Closed Cell) | Varies by thickness | Thickness ranges from 5mm (promo) to 25mm+ (premium 48-hour ice retention). |
| Liner: Food-Grade PEVA / TPU | Leak-proof | $2.00 - $6.00 / m² | FDA-compliant, anti-microbial, and easy to clean. Welded seams prevent leaking. |
Manufacturing & QC process
1
Insulation Engineering
Selecting the right foam density and thickness to meet your target ice-retention hours.
2
Liner Welding
High-frequency welding of the inner PEVA/TPU liner to ensure it is 100% seamless and leak-proof.
3
Outer Shell Assembly
Stitching or welding the rugged exterior, attaching heavy-duty webbing and handles.
4
Zipper Installation
Installing airtight zippers (for premium models) or standard water-resistant zippers.
5
Leak & Thermal Testing
Water-fill tests to check liner integrity and thermal camera checks for insulation gaps.
Quality & testing
• Ice Retention Test: Monitoring internal temperature over 24/48/72 hours.
• Inversion Leak Test: Filling the bag with water and hanging it upside down.
• Drop Test: Dropping a fully loaded cooler to ensure handles and seams hold.
• Inversion Leak Test: Filling the bag with water and hanging it upside down.
• Drop Test: Dropping a fully loaded cooler to ensure handles and seams hold.
Factory & testing preview
We can share real production, QC, and packaging videos for your project. Submit an inquiry and ask for the factory video pack.
Use cases
• Food Delivery: Retaining heat or cold for UberEats/DoorDash style operations.
• Outdoor Retail: High-margin soft coolers competing with premium brands.
• Promotional: High-quality corporate gifts that get used repeatedly.
• Medical: Temperature-controlled transport for sensitive items.
• Outdoor Retail: High-margin soft coolers competing with premium brands.
• Promotional: High-quality corporate gifts that get used repeatedly.
• Medical: Temperature-controlled transport for sensitive items.
Style variants & product gallery
Reference configurations for development discussion. Final styling follows your tech pack and brand positioning.
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RFQ checklist (to quote faster)
• Target retention hours + test condition (ambient temperature, ice load, opening frequency)
• Capacity target (cans/L) and internal dimensions
• Zipper level (standard / water-resistant / airtight) and opening style
• Inner liner preference (PEVA/TPU) + leak-proof requirement
• Insulation thickness target and max carry weight expectation
• Branding method (patch/print/sublimation) and placement
• Any compliance scope (food contact statement, medical cold-chain use case)
• Capacity target (cans/L) and internal dimensions
• Zipper level (standard / water-resistant / airtight) and opening style
• Inner liner preference (PEVA/TPU) + leak-proof requirement
• Insulation thickness target and max carry weight expectation
• Branding method (patch/print/sublimation) and placement
• Any compliance scope (food contact statement, medical cold-chain use case)
Frequently asked questions
Q: How long can your cooler bags keep ice?
A: Depending on the construction. Standard promo bags hold ice for 6-12 hours. Our premium welded TPU coolers with 25mm closed-cell foam can retain ice for 48-72 hours.
Q: Are the inner liners safe for direct food contact?
A: Yes, we use FDA-compliant, BPA-free, and phthalate-free PEVA or TPU liners.
Q: Can you do full-color printing on the cooler bags?
A: Yes, we offer sublimation and heat transfer printing for full-color, edge-to-edge designs on polyester outer shells.
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Start custom cooler bags production
Send your requirements and get a structured RFQ checklist and a manufacturing plan.