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portable vacuum insulated flask

Discover the ultimate companion for your daily hydration and adventurous outings with our premium portable vacuum insulated flask. Engineered for durability and performance, this flask is the perfect solution for keeping your beverages at the perfect temperature for hours on end. Whether you need a reliable stainless steel vacuum insulated flask for the office, a compact 16 oz vacuum insulated flask for your gym bag, a sleek travel vacuum insulated flask for your commute, or a rugged outdoor vacuum insulated flask for hiking and camping, our product line is designed to meet every need. Built with high-grade 18/8 stainless steel and advanced vacuum insulation technology, it ensures your coffee stays piping hot or your water remains refreshingly cold throughout the day.


The ThermoGuard Summit Flask redefines portable drinkware with its sophisticated engineering and user-centric design. Its core performance is defined by a meticulous set of parameters, detailed below for complete transparency and to highlight its professional-grade construction. The innovative construction features a double-wall vacuum seal that virtually eliminates temperature transfer, making it incredibly efficient.

Key Specifications & Features

  • Material: Premium 18/8 Food-Grade Stainless Steel (Body, Lid, Interior)
  • Insulation: Double-Wall Vacuum Insulation
  • Capacity: 16 oz (473 ml) - Perfect for single-serve portions.
  • Temperature Retention: Keeps drinks hot for up to 12 hours and cold for up to 24 hours.
  • Lid Type: Leak-Proof Screw Lid with Precision-Threaded Seal
  • Exterior Finish: Durable Powder-Coated Paint (Multiple Colors Available)
  • Base: Non-Slip, Scratch-Resistant Ring
  • Mouth Opening: Wide 1.8-inch aperture for easy filling, cleaning, and adding ice.
  • Weight: 12.5 oz (354 grams) - Lightweight yet sturdy.
  • Care: Dishwasher Safe (Top Rack Recommended)

Detailed Technical Performance

Performance Metric Hot Liquids (Initial 95°C / 203°F) Cold Liquids (Initial 4°C / 39°F)
After 6 Hours ≥ 74°C (165°F) ≤ 10°C (50°F)
After 12 Hours ≥ 60°C (140°F) ≤ 15°C (59°F)
After 24 Hours N/A ≤ 20°C (68°F)
Compatibility Details
Beverage Types Coffee, Tea, Water, Juice, Smoothies, Sports Drinks
Carry Options Fits in most car cup holders, backpack side pockets, and bicycle bottle cages.

Beyond the numbers, the ThermoGuard Summit Flask is designed for real-world use. The wide mouth allows for effortless pouring and cleaning, while the secure, leak-proof lid guarantees no spills in your bag. The ergonomic, sweat-free exterior provides a comfortable grip in any condition. Its robust stainless-steel build resists dents and odors, ensuring long-term reliability and taste purity for every drink.

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