Why choose a cylindrical design for cooler bags?

Our circular design maximizes space efficiency for bottled beverages while providing ergonomic portability. The cylindrical shape prevents shifting during transport and fits comfortably against the body when carried with the adjustable shoulder strap.

How long does thermal retention last?

The multi-layer PEVA insulation with EPE foam core maintains chilled temperatures for 8-12 hours under normal conditions. Performance varies based on ambient temperature and ice pack quantity.

Is the cooler bag completely leak-proof?

Yes. We use high-frequency heat-welding for the interior PEVA liner rather than stitching, creating seamless waterproof seams. The exterior 900D Oxford fabric adds secondary moisture protection.

What is the minimum order quantity and lead time?

MOQ is 500 units per color. Sample production takes 7 days. Mass production lead time is 30 days after sample approval. We accommodate rush orders with flexible scheduling for repeat clients.

What customization options are available for private labeling?

We offer silk-screen printing, 3D rubber patches, woven labels, and custom Pantone color matching. Dimensions can be modified from our standard 30×10cm specification. All branding options are included in our OEM service at no additional mold cost for standard applications.

Waterproof Oxford cooler bag set with two colors and straps.

Insulated cooler bag lining with thermal foil.

Waterproof Oxford cooler bag dimensions (30x10cm).

Custom Waterproof Circle Cooler Bag

Dimensions:30 × 10 cm (Customizable)

Material:900D Waterproof Oxford / PEVA Thermal Lining

Insulation:8-12 Hour Temperature Retention

MOQ:500 pcs per color

Sample Lead Time:7 days

Production Time:30 days

Shipping:Express 7-10 days | Sea 30-45 days

Contact:nina@merrisbags.com

Request Factory Pricing & Free Sample

Precision Manufacturing for Your Brand

Material Selection

High-density 900D Oxford with PU coating provides tear resistance and waterproofing. Available in custom Pantone matching for brand consistency.

Thermal Engineering

Multi-layer PEVA lining with EPE foam core. Heat-welded seams eliminate leakage points. Tested for 8-12 hour temperature stability.

Ergonomic Design

Cylindrical geometry optimized for beverage transport. Adjustable shoulder strap with reinforced stitching at stress points.

Quality Assurance

Pressure testing for seam integrity. Temperature retention validation. 3-point inspection before packaging.

Brand Integration

Silk-screen, rubber patches, or woven labels applied pre-assembly. No mold fees for standard branding positions.

OEM manufacturing process for OxFlex waterproof circular cooler bags

Water-resistant Oxford fabric and thermal insulation for custom circle cooler bags

Manufacturing Excellence: Since 2013, Merris has specialized in thermal bag OEM production for outdoor and fitness brands. Our Dongguan facility combines precision cutting, automated heat-sealing, and manual quality control to deliver consistent 500+ unit batches. We support your product development from prototype to scaled production.

Technical Specifications & Customization

Engineered for outdoor performance. Customizable to your brand requirements with 500 MOQ flexibility.

Waterproof Construction

900D Oxford with PU coating (water column >1500mm)
Seam-sealed zipper channels
Mildew-resistant backing for humid climates

Thermal Performance

PEVA food-grade lining (BPA-free)
8mm EPE insulation layer
Heat-welded interior seams (zero stitch holes)

OEM Capabilities

Custom dimensions (±2cm tolerance)
Pantone color matching
Silk-screen / Embossed / Woven branding
Custom hang tags and polybag packaging

Why Merris for Your Cooler Bag Program

12 years of thermal bag manufacturing exclusively. We do not outsource—every bag is cut, assembled, and inspected at our Dongguan facility. This vertical integration allows us to maintain sub-1% defect rates while offering competitive factory-direct pricing. Our engineering team provides DFM feedback within 48 hours of receiving your design brief.

Production Facility

ISO-certified manufacturing with dedicated thermal bag assembly lines. 15,000+ unit monthly capacity.

Production Capabilities: CNC fabric cutting | RF welding stations | Thermal chamber testing | Automated packaging

Product FAQ

Quick answers for procurement teams

Why cylindrical vs. rectangular design?

Circular geometry prevents bottle shifting and maximizes interior volume per exterior dimension. The curved profile sits closer to the body during transport, reducing bounce when running or cycling.

What is the actual temperature retention?

Laboratory testing shows 4°C liquid maintains below 10°C for 8 hours at 25°C ambient. Adding ice packs extends this to 12+ hours. Real-world performance depends on opening frequency and external conditions.

How is leak-proofing achieved?

Interior PEVA liner uses radio-frequency welding rather than needle stitching. This creates molecular bonds at seam joints, eliminating penetration points. Each bag undergoes 24-hour water retention testing before approval.

What are the true costs at 500 MOQ?

Unit pricing ranges $3.50–$6.00 FOB Shenzhen depending on material grade and branding complexity. No additional mold fees for standard silk-screen or single-color rubber patches. Sea freight to US West Coast adds approximately $0.40/unit at 500 quantity.

Are materials food-safe certified?

All PEVA liners are FDA 21 CFR 177.1350 compliant and Prop 65 tested. Oxford exterior meets REACH standards. Certificates available upon request for import documentation.

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Engineering feedback within 8 hours. Sample dispatch within 7 days.

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