Ninja's bottles have seen a surge in popularity after the brand offered them at a discounted price on its own website during the Black Friday sales . Although they've returned to their original price on Ninja's site, Amazon has slashed the price of the 530ml version from £29.99 to £19.99 . This timely price drop is perfect for Christmas shopping, making it an ideal gift for those looking to spend £20 or less, and could even be used for Secret Santa or as a stocking filler. The Ninja Thirsti is

Tag-uri: Black Friday