Coolflask 64 oz Half Gallon Insulated Water Bottle (Dark Green) with Straw & 3 Lids
Product description
If you’re trying to cut down on refills without giving up temperature control, the Coolflask 64 oz insulated water bottle is built for exactly that. It’s a half-gallon style jug with triple insulation and multiple lid options, so it can work as a gym water bottle, an office hydration station, or something you can toss into the mix for outdoor days.
The essentials
This bottle is made from 18/8 (304) stainless steel and is labeled non-BPA, reusable, and designed to resist rust and odor retention. The brand also mentions a sweat-resistant coating to help keep the outside surface drier and easier to grab.
On the temperature side, the key claim is triple insulation (double wall with vacuum sealing): cold drinks stay cold for up to 48 hours and hot drinks stay hot for up to 24 hours. That’s a big part of why the half-gallon size makes sense—fewer trips to refill, and better odds that what you pour early doesn’t feel lukewarm by mid-day.
What it does best in real life
The wide mouth and straw lid give it flexibility depending on how you actually drink.
A typical day could look like this: you fill the bottle in the morning, screw on the pop-top straw lid, and sip through the day at your desk or during training. When you need hot water later, you can switch to the lid that’s described as convenient for hot liquids. For adding ice, the lid with a handle and flip-up feature (screw-on with handle) is meant to make reloading ice more manageable.
It’s not trying to be a tiny “carry everywhere” bottle—this one is more “keep hydrated all day” than “minimal.” If you value fewer refills and strong insulation, it fits the use case.
Key points you should know before buying
The standout here is the combination of size + insulation + lid variety. You’re getting a large capacity (64 oz) with three different ways to drink, which can reduce the hassle of swapping your setup depending on whether you’re using ice water, room-temp drinks, or something warmer.
That said, there are a few limitations worth noting. It’s recommended to hand-wash only and to avoid abrasives. The care guidance also says not to put it in the freezer or microwave. And importantly, it’s not for soda. Finally, if you handle hot liquids, be careful not to burn yourself.
Tech specs
- Name: Half Gallon Water Bottle Insulated with Straw & 3 Lids (Coolflask 64 oz)
- Type: Insulated stainless steel water bottle / water jug
- Capacity: 64 oz
- Material: 18/8 (304) stainless steel
- Color: Dark Green
Where it shines (and where it may feel like too much)
It’s a solid fit if you want one bottle that covers most of your day—sports, gym sessions, and office hydration. The half-gallon format is especially handy when refilling is inconvenient or you simply don’t want to think about water throughout the day.
It might not suit you if you prefer lighter, smaller bottles that are easy to fit in narrow cupholders. Also, if you’re the type who wants to toss everything into a microwave or freezer, the care instructions are a clear mismatch. And if you mainly drink soda or carbonated beverages, the bottle is explicitly not intended for that.
Should you buy it?
Buy it if you’re looking for a large insulated stainless steel bottle that can keep drinks cold for long stretches, can handle hot drinks too, and comes with multiple lids (including straw and wide-mouth style options). It’s especially reasonable for people who want fewer refills and a simple grab-and-go routine at the gym or at work.
Skip it if you want a compact daily bottle, need dishwasher-friendly cleaning (this one is hand-wash recommended), or plan to use it for soda. Also, be realistic: it’s best for temperature-holding and capacity, not for ultra-portability.
Mini FAQ
How many lids does it include?
It includes 3 different lids, including one described for straw drinking and others for different drinking and pouring needs.
Can it keep drinks cold and hot?
Yes. The product information states it can keep drinks cold for up to 48 hours and hot for up to 24 hours.
What material is it made from?
It’s made with 18/8 (304) stainless steel and is labeled non-BPA.
Is it dishwasher safe?
The guidance says to hand-wash and not use abrasives.
Can I put it in the microwave or freezer?
No—do not put it in a freezer or microwave.