You have a choice of three main materials here – plastic, metal or glass.
The former is a material which people can be trying to avoid. However, if in a reusable piece of equipment, they are usually more substantial and can be used for years. They are also shatter- and dent-proof, and lightweight. When at the end of their life, the plastic can be recycled.
Look out for BPA-free plastic, and also something which is easy to wash as plastic can pick up flavours and affect the taste of the drink.
Metal bottles are usually stainless steel. They’re good for keeping drinks cooler for longer and can withstand knocks, but they are heavier and bulkier usually. You will generally pay a bit more for them than plastic variations.
Glass is best for cleaning, and won’t impact the flavour of your drink. They are easy to look after but obviously aren’t the best if you’re on the go or active because of the shatter risk. Some are reinforced to protect against shattering as much as possible, however.
How much water should you be drinking every day? Well, it depends on a lot of factors, but they say that for men it is an average of 3.7L per day.
You’d struggle to find a bottle which is quite so large yet comfortable to carry with you every day, so most reusable, transportable water bottles are around the 500-800ml mark.
How large you go depends on how much you need to drink throughout the day when away from home, and how big your bottle can be. You may want something small at 250ml which is simple to carry in your work bag, or a large bottle you don’t have to keep refilling.
Either way, there are plenty of choices out there, and some bottles are even available in various sizes.
Bottles need to be easy to clean so they don’t attract mould and dirt.
The materials which bottles are made out of should all be easy to keep clean, but also look for things like a wide neck and opening for easier internal cleaning. Many are handwash only, but if this doesn’t fit with your lifestyle you can opt to buy one which is dishwasher safe.
A bottle brush or sponge may come in handy, as will a bottle where the lid can be taken apart and fully cleaned.
You may want to pay attention to the lid. Some bottles will have sports lids which are good if you are on-the-go or active, as they can be drunk from easily.
If you’re concerned about the bottle leaking in a bag, look for something leak-proof and secure. If the style is a concern, a screw-top lid will likely look the nicest.
Always aim to drink a certain amount every day? Opt for a large bottle with a content indicator which will tell you how much water is left to go at a glance.