24 Oz Stainless Steel Tumbler With Straw

The 24 oz Stainless Steel Tumbler with Straw features a double-wall vacuum insulation architecture engineered to maintain cold liquid temperatures for up to 12 hours and hot temperatures for up to 6 hours. Manufactured with food-grade 18/8 (SUS304) stainless steel inside the liner, this vessel provides zero flavor transfer and rust resistance. The tapered base fits standard vehicle cupholders, while the splash-proof press-fit lid paired with a reusable stainless steel or food-grade silicone straw caters to high-volume beverage consumption. Designed for volume wholesale, private label branding, and custom surface finishing.

 

 

Thermal Integrity: Double-wall vacuum chamber with inner wall copper plating reduces thermal radiation, maintaining iced drinks under 5°C for 12 hours.

Food-Grade Contact Materials: Interior liner fabricated from 18/8 (SUS304) stainless steel; lid components crafted from BPA-free Tritan co-polyester.

Sweat-Proof Exterior: High-vacuum seal prevents surface condensation under high humidity conditions, keeping hands and surfaces dry.

Universal Base Compatibility: 72 mm base diameter fits standard automotive cupholders and commercial beverage mounts.

Dual-Function Seal: Press-in lid equipped with a silicone sealing gasket and a central straw port with a removable friction-fit straw tip.

 

 

Parameter	Technical Detail
Capacity	24 oz (710 ml)
Liner Material	Food-grade 18/8 Stainless Steel (SUS304)
Outer Shell Material	201 / 304 Stainless Steel
Dimensions	Height: 205 mm | Top Dia: 88 mm | Base Dia: 72 mm
Net Weight	340 g
Thermal Performance	Cold: < 5°C (12 Hrs) | Hot: > 60°C (6 Hrs)
Lid & Straw	Tritan press-fit lid; 304 SS or silicone straw
Fitment	Standard vehicle cup holders (> 73 mm)
Compliance	BPA-free, Lead-free solder, FDA, LFGB, REACH
Packaging	White box / 24 pcs per master carton

 

 

Construction begins with automated stretch-forming of 0.5 mm thick SUS304 stainless steel sheets into a seamless inner liner. The vacuum gap between the inner and outer shell is evacuated to 10⁻³ Pa inside a continuous vacuum annealing furnace. An electro-polished interior surface finish (Ra ≤ 0.4 μm) eliminates microscopic surface pores, preventing bacterial retention and beverage staining.

All sealing elements use food-grade silicone rubber (hardness 50 Shore A) tested for thermal stability between -40°C and 200°C. Vacuum seal integrity is validated via helium leak testing before surface treatment.

 

 

Handleless Standard Configuration: Straight-tapered profile engineered for high-density packing, streamlined surface printing, and friction-fit fitment into tight vehicle consoles and backpack side pockets.

Optional Ergonomic Attached Handle: Injection-molded polypropylene (PP) or stainless steel spot-welded side handle with soft-grip TPU overmolding. Welded versions undergo 15 kg tensile drop testing to guarantee structural bond.

 

 

Lid Variant	Material & Mechanism	Primary Use Case
Standard Press-Fit Straw Lid	Clear AS/Tritan body with central silicone straw grommet	Direct straw drinking with splash prevention during walking
2-in-1 Flip Straw & Sipper Lid	BPA-free PP with folding straw nozzle and thread locking	100% leak-proof transport in bags and active sports
Magnetic Slider Lid	Tritan with removable magnetic slider for easy disassembly	Dual use for hot sip liquids or direct straw insertion

 

 

Powder Coating: Electrostatic thermosetting coating offering high scratch resistance, tactile grip, and sweat resistance. Cross-hatch adhesion test rated ISO Class 0.

Spray Painting: Matte, gloss, metallic, or pearl effect liquid coatings matched to Pantone PMS codes.

Sublimation Coating: Polymer white base coat engineered for 360-degree full-bleed dye sublimation heat transfer.

Gradient & Electroplating: Dual-tone spray gradients and vacuum electroplated mirror chrome or iridescent finishes.

 

 

● Branding & Surface Decoration:
Laser Engraving: Fiber laser etching reveals base stainless steel; permanent and wear-resistant.
Silk Screen Printing: 1–4 color spot logo printing using UV-cured inks.
3D Digital Printing: Raised UV relief printing for textured graphics across 360 degrees.

● Packaging & Tooling Services:
Custom color boxes, cylinder tube packaging, display boxes.
Barcoding, FBA carton labeling, and insert cards.
Custom tooling for proprietary outer shell shapes (CAD/3D rendering within 48 hours).

 

 

Retail Brand Collections: Core stock SKU for outdoor, lifestyle, and fitness drinkware lines.

Corporate Merchandising: Premium branded corporate giveaways, employee onboarding kits, and event merchandise.

Automotive & Daily Commute: Designed specifically for fits into car cupholders during daily travel.

Promotional Programs: Custom color-matched vessels for promotional product distributors.

 

 

Production operates under ISO 9001 certified quality management protocols across automated metal forming, vacuum sealing, and coating lines. Quality control points include:

Incoming Material Inspection: XRF spectroscopy verification of stainless steel alloy composition (SUS304 chemical composition limits).

100% Vacuum Integrity Testing: Automated thermal sensor checks before and after surface coating.

Coating Adhesion & Durability: Standardized cross-hatch tape tests and 500-cycle dishwasher resistance testing.

Leakage Testing: Pressure differential testing on all lid and straw seal assemblies.

 

 

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