In tests the brand says it’s able to keep cold drinks cold for up to 24 hours, hot for up to 12 and ice for up to 2 days

Carrying a water bottle around should be a habit we all get into to keep us sufficiently hydrated through the day, especially as the warmer weather starts to creep in this summer. While Ninja might be best known for its air fryers, it also makes a coveted water bottle that has a few smart features up its sleeve – and it just got a huge reduction with a couple of deals stacked on top of one another, knocking 71% off the asking price [via Mirror Online].

Several retailers like Boden, Shark and Debenhams have all launched payday sales this month, and Ninja is no exception. With up to 20% off its best-selling kitchen gadgets, you can get gadgets like the FrostVault cooler range or the already-discounted 3-in-1 Food Processor for less.

As such, it’s an excellent time to pick up the Ninja Thirsti, which has dropped from £29.99 to £23.99 with the 20% off code PAYDAY at checkout. However, we can knock that price down even further at checkout by using an additional promotion from TopCashback.

Money saving website TopCashback offers everyone who signs up as a new customer a free £15 cashback bonus on their first purchase, as well as a percentage back on qualifying spends across thousands of online retailers. By stacking these two deals shoppers can get the 530ml Ninja Thirsti at a fraction of the usual price, taking it down to £8.79. There’s also a larger 700ml capacity bottle which is usually £34.99 and shoppers can snag that for £12.76.

The Thirsti comes in five different colours, ranging from classic white, grey and black options to slightly cheerier mint green and blue. As a brand, Ninja prides itself on coming up with ways to reinvent classic products and this is no different – it comes with three layers of vacuum-insulated stainless steel which keeps drinks at their perfect temperature for longer.

In tests the brand says it’s able to keep cold drinks cold for up to 24 hours, hot for up to 12 and ice for up to 2 days. Meanwhile, the BPA-free, leakproof bottle comes with a five year guarantee.

Of course, these kind of multifunction cups aren’t a new thing. We’ve previously tried and loved eco-brand Ocean Bottle’s 3-in-1 offering which can be personalised, comes in a range of colours and has three separate lids included (one for everyday sipping, one with a straw and a hot-drink friendly brew lid), making it basically the last travel drink cup you’ll ever need. What’s more, with every sale the brand funds the collection of 1,000 plastic bottles from the ocean, making it the ultimate feelgood purchase.

The key difference between this and the Ninja option, aside from the Ocean Bottle capacity being a few millilitres smaller at 500ml, is that Ninja say their technology means their bottles can specifically keep fizzy drinks fizzy for longer, retaining bubbles in carbonated drinks.

Hundreds of happy shoppers seem to agree, with the Thirsti amassing more than 400 reviews on the Ninja site since launch, with an average rating of 4.6 out of 5 and 92% of purchasers saying they would recommend the bottle.

One reviewer said: “At last, a reusable bottle that can be effectively used for sparkling water. No tainted taste or degradation of gas makes this a really welcome product.”

A second added: “I bought this to replace my old insulated drinks flask. This feels a solid and quality product and stylish too. Keeps cold drinks really cold all day and doesn’t take on flavours of the last drink which is important as I mostly have water.”

A third described it as ‘the best bottle,’ adding: “My morning coffee made at 7am was still hot at 3pm. As a busy mum and nurse I’m used to having lukewarm/cold drinks so the Thirsti has been a game changer. Even better, I can come home and chuck it in the dishwasher. The bottle is also a great size for travel as its fits in the car cup holders.”

Not everyone was so keen, with one three-star reviewer saying: “Very well built, and robust. Unfortunately, whilst it is good for fizzy drinks, hot coffee became very lukewarm within 4-5 hours.”

The versatile bottle can be picked up with 20% off in Ninja’s flash sale until 11.59pm on Wednesday, April 30, taking the price below Amazon, where it’s currently sold for £30 or Robert Dyas where it’s £24.99. Alternatively, read on for full details on how to stack the deals and get one for £8.79 with TopCashback.

How to claim a Ninja Thirsti for £8.79:

• Go to TopCashback and sign up as a new member.
• Search for Ninja, click ‘Get Cashback Now ‘ and purchase as normal. Shoppers get £15 cashback on a spend of £15 or more on any item including either the 530ml or 700ml versions of the Ninja Thirsti.
• Cashback will then track and appear in members’ TopCashback account within seven working days of purchase.
• After cashback is paid the small size bottles effectively work out at £8.79 while the larger size will be £12.76.