Ninja Thirsti Water Bottle and Flask 700 ML With Leak-Proof Lid, Designed For Carbonated, Hot & Cold Drinks, Ideal For Travel
Reviewed 23 August 2026 · price checked live
Check price on Amazon →Overview
Ninja Thirsti Water Bottle and Flask 700 ML sits in our camping, hiking & mountaineering listings, where we rank by how buyers actually rate a product rather than by brand. The manufacturer says: Triple-vacuum insulated keeps drinks hot, cold and retains fizz for hours. Expect up to 24 hours of cold drinks, hot drinks stay hot for up to 8 hours and ice that lasts for up to 2 days. PROOF LID: Wont leak when filled with hot, cold or fizzy drinks. Includes rubber gasket to ensure tight leak-proof seal. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.6 out of 5 from 4,503 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Ninja
- Amazon rating
- 4.6 / 5 from 4,503 ratings
- vs Camping, Hiking & Mountaineering
- 0.1 above the category median of 4.5
- Rank in category
- 7 of 45 rated camping, hiking & mountaineering we track
- Price position
- Towards the top of the range (category spans £1.25 to £55.97)
- How proven
- Well established, above-average review volume
How it compares in Camping, Hiking & Mountaineering
Across the 45 rated camping, hiking & mountaineering products we track, the typical score is 4.5 out of 5. This one sits at 4.6, which is around the middle of the category. Ratings alone will not separate it from its rivals here, so price and the specifics below matter more than the star count.
It carries 4,503 ratings against a category median of 2,601. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the upper third of a category running from £1.25 to £55.97, where the midpoint is about £9.99. Paying above the category norm needs a reason beyond the rating, because the score alone does not justify the gap here.
Worked out from the 45 camping, hiking & mountaineering products in our catalogue, not from the brand's own claims. How we rank →
Key features
- ENJOY HOT, COLD & FIZZY DRINKS FOR LONGER: Triple-vacuum insulated keeps drinks hot, cold and retains fizz for hours. Expect up to 24 hours of cold drinks, hot drinks stay hot for up to 8 hours and ice that lasts for up to 2 days
- LEAK-PROOF LID: Wont leak when filled with hot, cold or fizzy drinks. Includes rubber gasket to ensure tight leak-proof seal.
- STARTS FIZZY, STAYS FIZZY*: Smooth stainless steel interior reduces nucleation points for longer-lasting fizz. (*Lab-tested using commercial carbonated beverages, ensuring a minimum carbonation of 2.5g/l is maintained throughout the testing duration.
- EASY TO CLEAN: Ninja Thirsti Travel Bottles are dishwasher safe and can be hand washed with warm, soapy water.
- INCLUDES: Ninja Thirsti Travel Bottle & Lid. Dimensions: H: 25 cm x W: 8.1 cm x D: 8.8 cm. Weight: 420 g. Capacity:700 ml. Colour: Blue.
- 5-YEAR GUARANTEE**: (**Limited guarantee against manufacturer defects. Upon registration with Ninja (UK & ROI only).)
