Overview

• The 700ml Ninja Thirsti flask is triple-vacuum insulated to keep drinks cold for up to 24 hours, hot for up to eight hours and fizzy for two days.
• Its leak-proof lid with a rubber gasket ensures a tight seal and the bottle is dishwasher safe with hand-washable components.
• The bottle is available in multiple colours and Prime Day also features a 530ml variant discounted to £19.99 from its regular £29.99 price.
• It holds a 4.6-star rating from 1,885 Amazon reviews and has earned an Amazon’s Choice badge for its performance and value.
• Competing retailers Ninja, Tesco and Currys continue to sell the bottle at full price, leaving Amazon’s deal unmatched.