Milton Thermosteel Optima 420 Stainless Steel Flask, 420 ml, Steel


  • Color: Silver; Material: Stainless Steel; Package Content: 1 – Piece Optima Mug (420 ml)
  • Insulation type: Double wall; Temperature retention: Yes (Keeps liquid hot/cold upto 4 – 6 Hours); Leak proof: Yes
  • Best Usage: Gym, Sports, School, Outdoors
  • Pre-condition bottle with hot water if using for hot beverage and cold water if using for cold beverage; Use Mild Soap for cleaning the Flask and advised to be kept open when not in use to avoid odor
  • Fabricated inside and outside in 18/8 quality stainless steel; its tough and durable.

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Important information

Safety Information:


What is in the box?

  • 1-Piece Flask (420ml)

  • From the manufacturer

    Milton Thermosteel Optima 420 Stainless Steel Flask (420ml), Steel

    The Most Convenient Way for Storing your Beverages Without Any Hassle

    The most convenient flasks for storing all your beverages, this Thermosteel flask by Milton is the must-have for every individual. The copper coating provides heat retention and the stainless steel gives an anti-rust protection. The threaded lid further gives an easy mechanism for opening and closing the flask.


    • Easy to use
    • Portable
    • Leak-proof
    • Copper coating for better heat retention

    Copper Coating

    The copper coated construction of this leak-proof vacuum insulated flask provides heat retention. This makes it more convenient and user-friendly since it helps to maintain the temperatures of hot and cold drinks for long hours.


    The flasks are leakage proof, both at the surface and at the mouth. While the latter is secured by a trusty lid, the stainless steel body prevents the liquid inside from seeping out.


    The flask is convenient to store enough beverage for the day. Stay hydrated and refreshed with your favourite beverage wherever you go.

    Vacuum Insulated

    This vacuum insulated flask provides hassle-free utility to the user since it prevents the alterations of temperature by any means. Enjoy a hot cuppa or a cold lassi long after you had packed it in.

    Stainless Steel Material

    The stainless steel material makes the flask incredibly sturdy while also helping to retain its stylish outlook which makes it attractive to the users in the first place.


    Carry this convenient leak-proof flask wherever you go without having to worry about finding the perfect cuppa on the road. This flask can easily fit into the side pockets of your bag to enable hands-free portability.

    Additional information

    Weight 2 g
    Dimensions 1 × 4 × 5 cm


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