20 Oz Stainless Steel Tumbler With Straw

Engineered for reliable thermal performance, the 20 oz Stainless Steel Tumbler with Straw features double-wall vacuum insulation that maintains drink temperatures over extended periods. Built with an 18/8 (SUS304) food-grade stainless steel interior, this 590 ml vessel fits standard automotive cup holders and comes paired with a splash-resistant straw lid. The smooth, cylindrical outer wall provides a consistent surface area for high-precision logo printing, laser engraving, and full-wrap thermal sublimation.

 

 

18/8 Food-Grade Inner Wall: Prevents metallic off-flavor, interior rust, and pitting under everyday acidic beverage exposure.

Copper-Coated Vacuum Cavity: A thin interior copper layer reflects heat radiation, extending hot and cold temperature retention.

Vehicle Cup Holder Fit: Tapered 70 mm base slides cleanly into standard car, boat, and equipment cup holders.

Sealed Straw Port: The splash-proof AS/Tritan lid incorporates a silicone-gasket port that secures the straw while reducing spill risks during transport.

Impact-Resistant Coating: Durable exterior powder coat withstands scuffing, friction, and daily commercial use.

 

 

Specification	Technical Standard / Value
Brimful Capacity	20 oz / 590 ml
Insulation Technology	Double-wall vacuum with internal copper lining
Material (Inner / Outer)	SUS304 (18/8) Stainless Steel / SUS304 or SUS201
Lid & Straw Material	Food-grade AS/Tritan (BPA-free) + SUS304/Silicone Straw
Thermal Performance	Cold retention: <10°C at 12 hrs / Hot retention: >60°C at 6 hrs
Dimensions & Weight	Height: 175 mm | Top Dia: 88 mm | Base Dia: 70 mm | Net: 330 g
Surface Finish	Matte Powder Coat, Spray Paint, Sublimation Ready
Compliance & Safety	FDA 21 CFR, LFGB, REACH, BPA-free verified
Packaging Spec	24 units/carton | Egg-crate or custom retail box

 

 

Each inner liner is deep-drawn from a single 0.4 mm sheet of SUS304 stainless steel, eliminating vertical internal seams where liquid residue usually traps and oxidizes.

Before vacuum sealing, a sub-micron copper coating is electroplated onto the outer wall of the inner shell. The assembly then undergoes high-vacuum evacuation at 530°C for 90 minutes.

Every semi-finished core passes an infrared thermal inspection on the line to instantly flag and eject any compromised vacuum seals.

 

 

This model uses a sleek, handleless straight profile to maximize printable surface area, streamline packing density, and reduce freight costs per unit.

For buyers requiring a handle configuration, custom tooling allows for a spot-welded or press-fitted ergonomic stainless steel handle designed to pass 15 kg pull-force stress testing without distorting the outer vacuum shell.

 

 

Press-in Straw Lid: Transparent AS cover featuring a central silicone-gasket port that seals tightly around the straw to block splashing.

2-in-1 Flip & Straw Lid: Tritan-molded lid allowing direct drinking through a flip-lock spout or hands-free sipping through an integrated straw channel.

Threaded Travel Lid: Screw-on closure fitted with a heavy-duty food-grade silicone ring for leakproof transport in bags.

 

 

Textured Powder Coating: High-friction matte layer rated for 100-cycle dishwasher stability and scratch resistance.

Pantone Matched Spraying: Precision paint matching to exact PMS color codes with options for semi-gloss, matte, or satin sheen.

Sublimation Coating: High-purity white polymer base formulated specifically for clean, 360-degree heat-press transfer printing.

Water Transfer Printing: Custom woodgrain, marble, or multi-color graphics wrapped seamlessly around the vessel curve.
 

 

Logo Application: Fiber laser engraving, 1–4 color silk screen printing, 3D UV digital printing, and full-wrap heat transfers.

Custom Packaging: Corrugated gift boxes, white mailer boxes, UPC labeling, custom display trays (PDQ), and drop-test approved inserts.

Custom Tooling: In-house mold design for proprietary lid structures, custom surface embossing, or modified container capacities.

 

 

Corporate Merchandising: Premium branded gifts for corporate events, employee welcome kits, and promotional campaigns.

Private Label Brands: Off-the-shelf or customized drinkware inventory ready for outdoor, fitness, and lifestyle retail brands.

E-Commerce Supply: Ready-to-ship blank or custom-printed inventory optimized for Amazon, Shopify, and print-on-demand fulfillment.

Hospitality & Venues: Reusable branded drinkware solutions for resorts, cruise lines, and outdoor festivals.

 

 

Automated Laser Welding & Seam Integrity: Continuous robotic welding eliminates interior joint weaknesses, guaranteeing structural stability and zero vacuum cavity failure under long-distance shipping.

100% Dual-Stage Vacuum Testing: Every vessel passes two automated thermal sensor checks-once post-vacuum baking at 530°C and once post-coating-to verify temperature retention before packing.

ASTM D3359 Paint Adhesion Compliance: Finished surfaces undergo cross-hatch tape testing and 48-hour salt spray exposure to ensure coatings resist peeling, chipping, and commercial washing.

ISO 9001 Full Material Traceability: Raw SUS304 steel coils, food-grade silicone gaskets, and BPA-free lid materials are logged by batch number for total compliance auditing from raw coil to carton.

In-House Leak Inspection: Assembled lids and silicone seals undergo continuous air-pressure submersion testing to ensure zero liquid seepage during transport.

 

 

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