20 Oz Double Wall Vacuum Insulated Tumbler

 

Dual-Wall Vacuum Isolation: Sealed copper-coated inner liner stops heat radiation, keeping liquids cold for up to 24 hours and hot for up to 6 hours.

Sweat-Free Outer Shell: Dry-touch exterior wall prevents moisture condensation, protecting wooden desks and improving hand grip.

18/8 Food-Grade Stainless Steel: Constructed with non-reactive 304 stainless steel interior that resists rust, corrosion, and flavor transfer.

Universal Cup Holder Fit: Tapered lower body glides easily into standard cars, trucks, boats, and fitness equipment cup holders.

BPA-Free Tritan Press-In Lid: Shatter-resistant transparent lid with a food-grade silicone ring that blocks major liquid splashes during transport.

 

 

Parameter	Technical Specification
Nominal Capacity	20 oz / 590 ml
Inner Wall Material	304 Stainless Steel (18/8 Grade)
Outer Wall Material	304 Stainless Steel
Wall Thickness	Inner: 0.4 mm / Outer: 0.5 mm
Insulation Technology	High-Vacuum Cavity with Internal Copper Coating
Vacuum Sealing Technique	Lead-Free Glass Bead Melting Seal
Tumbler Height	168 mm (without lid)
Mouth Diameter	87 mm
Base Diameter	70 mm
Net Unit Weight	330 grams
Thermal Performance	Cold: 24 hours (8 degrees C or lower) / Hot: 6 hours (60 degrees C or higher)
Standard Lid Type	Press-In Clear Tritan Lid with Silicone Seal Ring
Compliance & Safety	FDA Compliant, LFGB Food Safe, BPA-Free, Prop 65 Compliant
Packaging Options	Bulk Egg-Crate, White Box, Custom Color Retail Packaging

 

 

Manufacturing starts with deep-drawing certified 304 stainless steel sheets into precision inner and outer cups. Double-wall positioning is fixed via automated laser welding along the rim to create a structural seal. A secondary internal copper-plating layer is applied to the outer face of the inner liner to reflect thermal radiation inside the chamber.

The units enter multi-stage continuous vacuum furnaces where air pressure is reduced to 0.001 Pa at high temperatures. Sealing is executed using lead-free glass beads to guarantee toxic-free compliance. Every unit undergoes automated temperature sensor testing to ensure thermal retention before reaching the coating line.

 

 

Press-In Slider Lid: Clear acrylic or Tritan cover featuring an adjustable sliding closure and straw port.

Flip-Straw Cap: Threaded leak-resistant cap with a built-in folding spout and detachable interior straw.

Magnetic Slider Lid: Easy-clean lid fitted with a removable magnetic slider for thorough cleaning.

Silicone-Tipped Stainless Straws: 304 stainless steel drinking straws paired with food-grade silicone tips to shield lips from temperature extremes.

 

 

Powder Coating: Textured matte surface providing scratch resistance, chip durability, and non-slip handling.

Gloss / Satin Spray Paint: Smooth color coating tailored to exact Pantone Matching System (PMS) color codes.

UV 3D Digital Printing: Full-wrap high-resolution graphic application directly on the metal surface without transfer seams.

Vacuum Electroplating: High-shine metallic chrome, rose gold, and gradient mirror finishes achieved through physical vapor deposition.

Sublimation Coating: Glossy white base coat formulated specifically for dye-sublimation heat transfer processing.

 

 

Laser Engraving: Fiber laser etching removes the outer finish layer to reveal the stainless steel beneath for permanent logo branding.

Silk Screen & Pad Printing: High-adhesion ink printing tailored for solid-color corporate logos and fine line art.

Custom Tooling & Mold Design: In-house CAD and tooling capabilities for custom cup silhouettes, specialized lids, and ergonomic handles.

Retail Packaging Customization: Fully branded color tuck boxes, rigid cylinder tubes, craft paper boxes, and custom barcode labeling.

 

 

Automotive & Daily Commuting: Fits center console cup holders for safe one-handed drinking during travel.

Outdoor & Recreation: Sturdy metal body withstands rough outdoor exposure during camping, hiking, and sports events.

Corporate Merchandise & Branding: Reliable blank canvas for custom logo placement, trade show giveaways, and employee onboarding gifts.

Private Label Retail: Ready-to-brand inventory item tailored for outdoor gear suppliers, lifestyle brands, and e-commerce sellers.

 

 

Automated Vacuum Production: Automated vacuum annealing lines ensure consistent temperature retention across all mass production batches.

100% Thermal Inspection: Every single unit passes through dual-stage infrared thermal sensor checks to catch vacuum loss before final packing.

Certified 304 Raw Material: Chemical spectrum testing verifies 18/8 stainless steel composition on every shipment of raw steel coils.

Lead-Free Manufacturing: Sealing processes strictly utilize non-toxic lead-free materials to pass international safety standards.

In-House Quality Control Lab: Facilities conduct cross-hatch paint adhesion tests, salt spray rust tests, and drop impact checks for every lot.

 

 

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