Ninja's under £50 kitchen gadget is 'perfect' for anyone on a summer weight-loss kick

Those looking to save money on costly smoothies and protein shakes at the gym and at coffee shops have been snapping up a viral Ninja product. Health-conscious shoppers have been raving about how the Ninja Blast Portable Blender is an 'easy way' to increase fruit into their diet.

The blender-slash-bottle is pretty self-explanatory, a drinks bottle fitted with a rechargeable blender, but that doesn't shy away from the genius on-the-go smoothie making. You can simply stash your favourite smoothie or protein shake ingredients in the morning and blend anytime in the day when it suits - that way you have a freshly whizzed drink to enjoy.

The mini blender has a rechargeable USB-C base which does 10 blends on one single charge. Plus, there's a 530ml blending cup, and a leakproof lid which means you can stash it away in your work or handbag with no messy problems

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Ninja's Blast Portable Blender is available on Amazon for £49 and in four gorgeous colourways, including Denim Blue, Cranberry Red, Purple, Black and Forest Green. Elsewhere, the blender is available on the Ninja website for basically the same price at £49.99, but then you'll miss out on Amazon's free next-day delivery, if you're a Prime member.

Ninja's Blast Portable Blender has racked up over 460 five-star reviews on Amazon. One shopper said: "This little blender is the bees knees. Crushes ice and blitzes frozen berries down to nothing. So happy with my purchase."

A second wrote: "I love this portable blender/shaker. I use this for