Hours left to grab Ninja water bottle for just £9 in top deal - it 'keeps drinks cold all day' Ninja has launched a surprise sale, but savvy shoppers have figured out how to get this top water bottle even cheaper The Ninja Thirsti in mint With the arrival of warmer weather, many of us are switching from travel mugs of tea or coffee to water bottles to ensure we stay hydrated while on the go. The Ninja ultimate travel bottle has been lauded by hundreds of shoppers for its ability to keep cold drinks cool and hot drinks warm - and bargain hunters have discovered a way to get one at a massive 71 per cent discount off the usual price by combining deals. Last week, Ninja launched a surprise sale offering 20 per cent off selected bestsellers - but clever shoppers found a way to get the brand's ultimate travel bottle, the Ninja Thirsti, even cheaper by stacking the sale code with a lesser-known additional offer. Read more: Fragrance fans 'addicted' to 'beautiful' £11 perfume that's like 'sunshine in a bottle' Normally priced at £29.99, the Thirsti drops to £23.99 with the code, but by taking advantage of both deals, the final cost comes down to less than £9. TopCashback, the money-saving website, is offering a free £15 cashback bonus to all new customers on their first purchase. This deal also includes a percentage back on qualifying spends across thousands of online retailers such as Next, Boots, Ninja and more. By combining these two offers, shoppers can purchase the 530ml Ninja Thirsti for a fraction of its usual price, reducing it to just £8.79. The Ninja Thirsti (Image: Ninja ) There's also a larger 700ml bottle, typically priced at £34.99, which can be snapped up for only £12.76, reports the Mirror. The Thirsti is available in five different colours, from classic white, grey and black to the more vibrant mint green and blue. Ninja, as a brand, prides itself on reinventing traditional products, and the Thirsti is no exception. It features three layers of vacuum-insulated stainless steel, ensuring drinks maintain their ideal temperature for longer. According to the brand's tests, the Thirsti can keep cold drinks chilled for up to 24 hours, hot drinks warm for up to 12 hours, and ice frozen for up to 2 days. Ninja claims it can keep your fizz fizzy longer than other brands too, keeping those carbonated drinks perfectly bubbly. The Ninja's Thirsti has garnered heaps of fanfare, racking up over 400 glowing reviews on their website since its debut, earning an impressive average rating of 4.6 out of 5. One cheerful user remarked: "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." Another chimed in saying: "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." One thrilled mum raved about the product, saying: "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." However, opinions were mixed, with a less impressed buyer noting: "Very well built, and robust. Unfortunately, whilst it is good for fizzy drinks, hot coffee became very lukewarm within 4-5 hours." You can grab the handy bottle with a sweet 20% discount in Ninja's limited-time sale ending at 11.59pm on Wednesday, April 30. This deal beats the price on Amazon, where it is currently up for grabs at £30, and Robert Dyas's tag of £24.99. Want to save even more? Keep reading to discover how you could snag one for just £8.79 with TopCashback. Article continues below How to claim a Ninja Thirsti for £8.79: