Products

316 Outdoor Flask

For adventurers and professionals who demand uncompromising quality and durability, the 316 Outdoor Flask is the ultimate hydration companion. Built to withstand the rigors of any environment, from mountain trails to urban commutes, this flask is engineered using premium 316 stainless steel. This superior material offers exceptional resistance to corrosion, pitting, and cracking, ensuring your drinks stay pure and the flask lasts for years. Whether you need a reliable 316 Flask 500ml for a day hike, a generous 316 Flask 750ml for extended journeys, a convenient 316 Car Flask for road trips, or a sleek 316 Office Flask for the workplace, our range is designed to meet every need. The advanced vacuum insulation technology maintains beverage temperature for hours, keeping coffee piping hot or water refreshingly cold. Its ergonomic design, secure leak-proof cap, and easy-grip surface make it the perfect choice for active lifestyles.


The 316 Outdoor Flask stands apart due to its meticulous construction and user-centric features. Every component is selected for performance and longevity. The flask's interior is crafted from medical-grade 316 stainless steel, which is non-reactive and will not impart any metallic taste to your beverages, whether it's water, juice, coffee, or even acidic drinks. The exterior features a rugged, scratch-resistant finish that looks great and provides a secure grip in all conditions. The wide mouth allows for easy filling, cleaning, and adding ice cubes. The double-wall vacuum insulation is a core feature, creating a powerful barrier against external temperature changes. This means your hot drinks stay hot and your cold drinks stay cold significantly longer than with ordinary flasks. The screw-on lid incorporates a reliable silicone gasket, ensuring a perfect seal to prevent leaks and spills in your backpack, car cup holder, or on your desk. Designed for everyday resilience, the 316 Outdoor Flask is more than just a container; it's a reliable piece of gear built for those who value quality, convenience, and performance in their daily hydration.

Specification Detail
Primary Material 316 Stainless Steel (Interior & Exterior)
Insulation Type Double-Wall Vacuum Insulation
Capacity Options 500ml, 750ml
Lid Material Food-Grade PP with Silicone Seal
Temperature Retention (Hot) Up to 12 hours
Temperature Retention (Cold) Up to 24 hours
Mouth Diameter Wide Mouth (48mm)
Height (750ml) Approx. 27cm
Diameter (750ml) Approx. 8.5cm
Weight (Empty, 750ml) Approx. 450g

Hot Products

  • Vacuum Flask Water Bottle

    Vacuum Flask Water Bottle

    Designed and manufactured by Yongkang Jianyang Metals, a factory with over 18 years of experience in stainless steel drinkware. This 260ml vacuum flask water bottle strikes the right balance between portability and half day hydration. It is slim enough for a car cup holder, light enough to carry on a busy morning, and holds enough water to keep you going without constant refills.
  • Black Sports Water Bottle

    Black Sports Water Bottle

    At Jianyang, we integrate the concept of sustainable development into every design. Each black sports water bottle is made of high-quality recycled stainless steel, reducing waste and extending the service life of existing materials without affecting durability and safety. We adopt responsible packaging methods and use FSC-certified materials, all of which come from well-managed forests, dedicated to maintaining the health of the Earth.
  • Water Aluminum Bottle

    Water Aluminum Bottle

    Jianyang's classic water aluminum bottle has been recorded in history; We are shaping the future. Thanks to recycling, it has been revitalized. The bottle body is 100% made of recycled aluminum, and the bottle cap is also made of renewable materials. The internal coating of the product is resistant to acid corrosion, free of chemicals, and completely leak proof. The bottle design is inspired by nature, using colors and patterns to emphasize the importance of climate protection, while also reflecting the core concept of sustainable development. We support purchasing different specifications of 400.500.600.750.1000ml
  • Thermosteel Bottle

    Thermosteel Bottle

    Jianyang's custom brand thermosteel bottle is a fashionable promotional choice with a variety of styles, from classic screw cap sports water bottles to personalized hiking buckle water bottles and matte fitness water bottles, we have everything we need. These products are sturdy and durable, eye-catching and easy to see, serving as a carrier to showcase the company logo or sports team brand, and can persistently strengthen your commitment to health. Customized thermos bottles are an effective way to enhance the effectiveness of fitness challenges, outdoor exhibitions, and new student enrollment activities. Aluminum water bottles with brand logos not only ensure a clear and visible brand image, but also provide users with a sustainable and reusable way to drink water, helping them stay hydrated throughout the day.
  • Picnic Drinking Bottle

    Picnic Drinking Bottle

    Jianyang is pleased to introduce your brand new hydration container - picnic drinking bottle. Whether in the gym, office, or outdoor picnic, it can keep your drinks at the appropriate temperature. Our water bottles are BPA free, allowing you to use them with peace of mind. And made of high-quality 304 stainless steel, it has durability and corrosion resistance, allowing you to enjoy a pure taste every time you sip. This product also has a stylish appearance, which gives it face when taken out.
  • Stanley Tumbler

    Stanley Tumbler

    Use Jianyang's personalized and durable Stanley Tumbler to keep your drinks at the ideal temperature and showcase a fashionable style. Whether you want to customize a Stanley Tumbler, engraved stainless steel cup, or need to print your brand logo, we can easily help you print your logo or design on classic products. Whether it's corporate gifts, events, or daily drinking water, they are all very suitable as gifts.

Send Inquiry

X
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies.Privacy Policy
RejectAccept