
IDEUS Vacuum Insulated Water Bottle
For long workouts and day-long commutes this 40oz insulated bottle keeps drinks cold for up to 24 hours and includes two lids so you can switch between sipping and pouring.
If you need one bottle that lasts a full workday, a long hike or a gym session without constant refills, a large-capacity vacuum flask is the obvious solution. IDEUS's 40oz (1140ml) insulated bottle targets exactly that use case: big volume, stainless-steel construction and vacuum insulation that the listing claims holds temperatures for up to 24 hours. ## What makes it worth it This bottle is built from food‑grade SUS304 (18/8) stainless steel and is BPA‑free, which means you get a corrosion‑resistant interior that won’t flavour your water. The 1140ml / 40oz capacity is genuinely useful if you dislike topping up during long days outdoors or at the gym. IDEUS ships the bottle with two lids (a screw cap and a sip/straw-style lid on many listings) and a wider mouth for easier pouring and cleaning — small practical details that beat single‑lid alternatives. The double‑wall vacuum construction is stated to keep drinks hot or cold for up to 24 hours, putting it in line with other large insulated bottles on the market. ## Where it falls short This is a value-oriented product from a smaller brand, so long-term durability and finish resilience can vary between batches and user reports; the brand pages make leak‑proof claims but don't provide the same field testing or warranty confidence you get from established premium names. Buy this if you want a high-capacity insulated bottle that actually replaces several smaller flasks on long days; skip it if you want proven, long-term warranty backing and the absolute lightest premium finish from a major outdoor brand.
£26.99
Buy nowBuy if
You need one large bottle that keeps drinks cold for a full day and prefer not to top up between workouts, commutes or long outdoor trips.
Skip if
You want an industry-leading warranty, premium finish and the absolute lightest premium materials from a top outdoor brand, in which case a Hydro Flask or Yeti is a safer long-term bet.
What we found
Capacity
1140 ml (40 fl oz)
Material
SUS304 (18/8) stainless steel, BPA-free
Insulation
Up to 24 hours (double‑wall vacuum insulation)
Lids included
Two lids (screw cap + sip/straw-style lid on product listings)
Mouth opening
Wide mouth design for easier cleaning and ice access
Ready to buy?
£26.99