304 Grade Stainless Steel Tumbler | 24H Cold, 12H Hot Retention

304 Grade Stainless Steel Tumbler | Precision Vacuum Insulation for Industrial & Commercial Use

Discover the ultimate 304 Grade Stainless Steel Tumbler engineered for superior thermal performance. Zhejiang Gint Vacuum Flask Technology Co.,Ltd. combines aerospace-grade vacuum insulation with food-grade 304 stainless steel to deliver a tumbler that keeps beverages hot for 12 hours or iced for 24 hours. Our ISO-certified manufacturing ensures every unit meets exacting standards for durability, safety, and efficiency. Ideal for corporate gifts, hospitality, outdoor brands, and promotional events, our tumblers feature customizable logos, sizes (12oz, 20oz, 32oz), and finishes. With a production capacity of 2 million units annually and a global shipping network, we meet B2B demand quickly and reliably. Request a quote today to elevate your product line with a premium 304 Grade Stainless Steel Tumbler that satisfies the most discerning clients. Our factory adheres to strict quality control at every stage, from raw material selection to final packaging, ensuring consistency in every orde

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Advantages of the product

Superior Thermal Retention Through Double-Walled Vacuum Insulation

Our 304 Grade Stainless Steel Tumbler features a double-wall construction with a vacuum-sealed gap that eliminates heat transfer via conduction and convection. This advanced engineering keeps hot beverages at an optimal temperature for up to 12 hours and cold drinks chilled for 24 hours, regardless of ambient conditions. The vacuum insulation is enhanced with a copper coating on the inner wall, reducing radiative heat loss further. This performance is tested rigorously in our ISO-accredited laboratory, ensuring that your customers experience exceptional temperature retention in every use. Compared to standard stainless steel cups, our tumbler reduces temperature drop by 45% over six hours, making it the preferred choice for professionals and outdoor enthusiasts who demand reliability.

Unmatched Durability with Food-Grade 304 Stainless Steel

Crafted from premium 304 grade stainless steel, the tumbler is resistant to rust, corrosion, and pitting, even when exposed to acidic beverages like coffee, tea, or fruit juices. The 18/8 composition (18% chromium, 8% nickel) provides exceptional strength and longevity, ensuring the tumbler withstands daily wear, drops, and dishwasher cycles without losing its finish or structural integrity. Each tumbler undergoes a passivation process to enhance its protective oxide layer, making it safe for repeated use and easy to clean. The steel is 100% BPA-free and food-grade certified, meeting FDA and EU standards. Our durability tests simulate 10,000 cycles of regular use, confirming that the tumbler maintains its pristine appearance and performance over years of service.

Custom Engineering and OEM Services Tailored to Your Brand

We understand that each business has unique needs. Our in-house engineering team works closely with clients to develop custom tumbler designs, sizes, and colors that align with brand identity. From laser engraving logos to full-color wraps, our finishing options include powder coating, matte, glossy, and metallic finishes. We support MOQs as low as 500 units for standard customizations, with flexible scaling up to mass production. Additionally, we offer assistance with mold development, prototyping, and rapid sample delivery (3-5 days) to accelerate your time-to-market. Our factory’s advanced production lines ensure tight tolerances (±0.5mm) and consistent quality across every batch, backed by a 2-year warranty on insulation integrity and craftsmanship.

In the competitive landscape of promotional products and premium drinkware, the 304 Grade Stainless Steel Tumbler stands out as a symbol of quality and innovation. Its core material, 304 stainless steel, is widely recognized for its excellent corrosion resistance, hygienic properties, and aesthetic appeal. Unlike lower-grade steels, 304 grade does not impart metallic taste to beverages and easily withstands repeated use without degrading. The vacuum insulation technology employed in our tumblers is the result of decades of precision engineering, ensuring that every unit delivers consistent thermal performance. From manufacturing to delivery, our processes prioritize sustainability: we use eco-friendly powder coatings and recyclable packaging. For businesses, offering a 304 Grade Stainless Steel Tumbler with your logo not only promotes brand visibility but also aligns your image with health-conscious and environmentally aware consumers. As global trends shift toward reusable products, investing in a high-quality tumbler positions your brand as a leader in responsible practices. Our factory’s expertise in customizing tumblers for various markets—from North America to Europe— allows us to adapt to cultural preferences, such as incorporating measurement markings or alternate lid styles. Whether you are a wholesaler, distributor, or a company looking for corporate gifts, our 304 Grade Stainless Steel Tumbler is a versatile product that meets high standards of functionality and design, ensuring customer satisfaction and repeat business.

Frequently Questions

What are the dimensions and capacities available for the 304 Grade Stainless Steel Tumbler?

Our tumblers are offered in popular sizes: 12oz (355ml), 16oz (473ml), 20oz (591ml), and 32oz (946ml). Custom sizes can be accommodated depending on design complexity and minimum order quantity. Each tumbler’s external diameter and height are optimized to fit standard cup holders, with dimensions varying slightly by capacity. For example, the 20oz tumbler measures approximately 8.5 inches in height and 3.2 inches in diameter. Detailed specification sheets and CAD drawings are available upon request to assist with your planning.

Is the tumbler safe for use with carbonated beverages or dairy products?

Yes, the 304 grade stainless steel is non-reactive and will not alter the taste of your beverages, including carbonated drinks and milk-based products. The interior is polished to a smooth finish, preventing bacterial buildup and making cleaning effortless. However, due to the vacuum insulation, we recommend avoiding prolonged storage of carbonated beverages as pressure can build up over time; it is best to open the lid periodically. For dairy products, always clean the tumbler thoroughly after each use to prevent spoilage.

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Customer Testimonials

Sarah Mitchell

Outstanding Quality and Service

We ordered 5,000 tumblers with our company logo for a corporate event. The quality exceeded our expectations—no rust, perfect insulation, and the engravings were sharp. The team at Gint was responsive and provided excellent sampling. Our guests loved the sleek design, and we received many compliments. Highly recommend!

James Carter

Reliable Partner for Our Brand

As a distributor of outdoor gear, we were seeking a durable, high-performing tumbler to add to our catalog. Gint’s 304 Grade Stainless Steel Tumbler has been a bestseller. The customer feedback highlights how well it keeps drinks cold for a full day. Their factory’s consistent quality and timely delivery have made them our go-to supplier.

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24-Hour Cold & 12-Hour Hot Retention

Thanks to our proprietary vacuum insulation technology, the 304 Grade Stainless Steel Tumbler maintains beverages at ideal temperatures for extended periods. This is achieved through an airtight vacuum layer that eliminates all forms of heat transfer. Independent tests confirm that after 24 hours, iced water remains chilled at 42°F (5.5°C) in a 90°F (32°C) environment. This performance far exceeds standard insulated cups and ensures your customers enjoy their drinks at the perfect temperature, enhancing their overall experience.

Sweat-Free Exterior with Premium Grip Coating

The tumbler’s exterior is treated with a soft-touch, no-slip coating that provides a comfortable grip and prevents condensation from forming. This feature keeps hands dry when holding a cold drink and protects surfaces from moisture rings. The coating is resistant to scratches and UV fading, maintaining its texture and appearance over time. This attention to detail sets our tumbler apart in both form and function.