Usually, wheat straw would be used as biofuel, animal feed or burnt in the open - causing pollutant emissions. In some cases, this feature wasn't available but we made sure the bottles had other redeeming qualities to compensate. The natural filter system works via a traditional Japanese Binchotan Charcoal filter stick which is supposed to sit in a dip inside the bottle, locked into place, although it’s impossible to actually place it when you can’t get your hands inside the bottle.

And when you do want to handle the bottle, its powder coating helps you keep your grip, even when you’ve worked up a sweat. This glass water bottle with transparent colors allows you to check the water level during the day and offers a beautiful design.On the downsides, it doesn’t have any insulating properties and is fairly functional-looking, but those are small niggles. A beautiful choice of pastel colors including pink blue ombre is the best choice for a girl that loves fitness. Forget a yacht on the med or a Rimowa suitcase, these oversized tumblers are the status symbol of the 2020s, flying high on the back of the wellness trend which outlived the pandemic. The only bottle we tested that comes with a user manual, it can filter bacteria, parasites, chemicals, pesticides and the microplastics we’re all trying to reduce by using a reusable water bottle in the first place. Most of the bottles have twist-off lids and wide openings to make cleaning easier, so every time you will want to drink water, you will need to stop for a moment to do so.

At first look, it has an odd-looking lid, until you realise the whole top third of the whole bottle unscrews and turns into a drinking cup complete with (non-suction) base. It can also have a negative effect on health, so we’ve only tested products that are labelled BPA-free. You may be charged import duties and taxes by your local customs authority when your parcel is received into your country.

At the same time, it releases minerals including calcium and iron into the water, without adding even the faintest hint of charcoal taste. My one gripe is that the lid is stiff to operate - meaning anyone with joint issues or frail hands will struggle.

And, of course, as this is a Dopper product, you’re doing some good: Dopper gives 5 per cent of its net turnover to the Dopper Foundation, which helps reduce plastic pollution and provides drinking water to those who need it. The series includes designs from well-known manufacturers such as Sistema and S'well as well as printed water bottles. A slim shape and secure lid make it suitable to carry in a bag or hold by the carry loop threaded through the lid – although when full it’s quite heavy, so it’s perhaps best kept to hand on your desk. It’s a shame the straw isn’t rounded, as its square edges feel odd to drink from at first, but that’s a small niggle, as is the fact that this bottle isn’t insulated.The bottle also has a leakproof lid with a carry strap and a convenient flip-top lid for easy one-handed access. But it’s a sturdy, well-insulated bottle that – unlike the gigantic Stanley Quencher – is adaptable for just about every situation. The products or services listed have been selected independently by journalists after hands-on testing or sourcing expert opinions. Its insulated 'flex cap' has a novel rubber handle secured by two large circular rivets – they add to this bottle’s style and sturdiness.