Which Water Bottle for the Gym and Office? Steel, Thermo or Plastic

The best bottle is the one you actually refill. For most people that is a stainless steel bottle of 750–800 ml: big enough for half a working day, robust, and free of plastic taste. Choose a double-walled thermo bottle if you want water to stay cold for hours.

Written by Velion Physique. Working in the fitness industry since 2019, with five German trainer licences. General information, not medical advice.

THE RIGHT EQUIPMENT

Insulated Bottle 800 ml | Magnetic Lid with Phone Holder

800 ml stainless steel bottle with magnetic lid that holds your phone – for workout videos and timers. 4 colours, ships from Germany. · $41.00

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Steel, thermo or plastic?

Which size?

• 500 ml: light for the gym bag, cycling or hiking – refill often.
• 750–800 ml: the sweet spot for the desk – two fills cover a large part of your day.

How much should you drink? Read how much water per day – a simple rule plus when you need more.

Our picks

• Stainless steel bottle 500 ml – only 160 g, bamboo lid
• Bottle 800 ml with phone holder – magnetic lid holds your phone for workout videos
• Thermo bottle 750 ml – 24 h cold, 12 h hot, leak-proof (also in greige)

Cleaning tip

Rinse daily, and once a week fill with warm water and a teaspoon of baking soda, leave for an hour, then rinse. Wash lids and seals by hand.

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