leakproof small mouth flask

When searching for a reliable and durable liquid container, the choice often comes down to the stainless steel small mouth flask. This design is not only robust but also ensures your beverages maintain their intended temperature for hours. For those who require exceptional thermal performance, the insulated small mouth flask is engineered with advanced vacuum technology, making it perfect for both hot coffee on a chilly morning and a cold drink during a summer hike. If you need a specific capacity, the 1 liter small mouth flask offers an ideal volume for all-day hydration without being overly bulky. Its design is particularly suited for people on the go, and the travel small mouth flask variant often includes features like a compact form factor and a secure, leak-proof cap, making it an indispensable companion for any journey.


The Guardian Flask is meticulously crafted with a focus on performance and user convenience. Its small mouth opening is designed for controlled pouring, minimizing spills and making it easy to drink from directly. The flask's body is constructed from high-grade 18/8 stainless steel, which is resistant to rust and odors. A key feature is the double-wall vacuum insulation, which can keep liquids hot for up to 12 hours or cold for up to 24 hours. The screw-on lid incorporates a silicone gasket to create a perfect seal, guaranteeing that the contents remain securely inside even when the flask is jostled in a backpack. The exterior features a powder-coated finish for a comfortable, non-slip grip. We have provided the detailed specifications below in both a list and a table for a clear overview.

  • Material: 18/8 Food-Grade Stainless Steel
  • Capacity: 1 Liter (33.8 fl oz)
  • Insulation: Double-Wall Vacuum
  • Heat Retention: Up to 12 Hours
  • Cold Retention: Up to 24 Hours
  • Lid: Screw-On with Silicone Gasket
  • Height: 10.5 inches (26.7 cm)
  • Diameter: 3.2 inches (8.1 cm)
  • Weight: 14.5 oz (411 g)
  • Finish: Matte Powder Coat
Specification Detail
Primary Material 18/8 Stainless Steel
Total Capacity 1 Liter
Insulation Type Double-Wall Vacuum
Hot Retention (95°C+) 12 Hours
Cold Retention (0-4°C) 24 Hours
Lid Mechanism Screw Top with Silicone Seal
Product Height 10.5 inches / 26.7 cm
Product Diameter 3.2 inches / 8.1 cm
Empty Weight 14.5 oz / 411 g
Exterior Coating Matte Powder Coat

Hot Products

  • Pineapple Tumbler

    Pineapple Tumbler

    We are factory of stainless steel pineapple tumbler. Our stainless steel water bottle factory is in Yongkang city, zhejiang province, China. We have more than 10 years experience in vacuum tumbler industry, we make the good quality bottle for all the world. Hope we can be the long time cooperation partner.
  • Sublimation Blanks

    Sublimation Blanks

    Kudike is the brand who is the manufacturer and factory in stainless steel bottle industry. We have more than 13 years experience about production sublimation blanks, we keep our heart in water bottles quality. We are looking for long time cooperation partner in steel bottle industry, do more huge energy for mutual benefits in stainless steel water bottle industry.
  • Outdoor Tea Set

    Outdoor Tea Set

    Kudike is the brand of water bottle, the outdoor tea set is our new product. All material is used the titanium. We are looking for long time cooperation partner.
  • Insulated Tumbler Water Bottle with Straw

    Insulated Tumbler Water Bottle with Straw

    500ml Kudike brand stainless steel insulated tumbler water bottle with straw.
    We are the factory who have whole production line in stainless steel tumbler water bottle, and we have more than 12000 suqare meter, our production quantity is more than 30,000 pcs every day. High quality is our aim to all bottles.
    We are looking for long time cooperation partner to open the market together with our high quality stainless steel water bottles.
  • Auto Mug with Handle and Straw

    Auto Mug with Handle and Straw

    This auto mug with handle and straw is the most suitable product for experienced coffee enthusiasts. It is completely leak proof, you can throw it into your bag or let it roll freely in the car. The ceramic coating on the inner layer ensures that there will be no metallic odor contaminating your perfect morning coffee. Thanks to the vacuum insulated stainless steel material, Kudike's auto mug with handle and straw performed very well in our insulation tests, with a temperature drop of only 44 degrees within six hours.
  • Large Capacity Flask

    Large Capacity Flask

    Double wall vacuum insulated large capacity flask with silicone handle.
    Production by manufacturer -Yongkang Jiangzhi Cup Industry Co.,Ltd
    High-quality products and new designs are the first elements for hot sales.
    Contact us through mail to get quoataion.

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
Reject Accept