The Best Water Bottle To Keep Water Cold

Do you like a cold sip of water on a hot day? Yeah, me too. That is why I’ve been on the quest to find “what is the best water bottle to keep water cold” and I’m about to share with you what I’ve found.

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It’s a scientific fact that if you fill your water bottle with cold water and leave it, the heat from the surroundings will transfer into the water, causing the water to warm up in some time. OK, that’s not a very scientific explanation but you get the point. The water in your bottle will warm up, so no cold sip. Unless you have an insulated water bottle

In a water bottle with insulation, the insulating layer and vacuum between the walls create a barrier that prevents external heat from reaching the liquid inside the bottle. I don’t want to bore you with physics, so it’s overly simplified here, but that’s how insulation works to prevent heat transfer. This helps to keep cold liquids cold (and hot liquids hot) for an extended period of time.

The best water bottles that keep the cold for a long while have double(or triple)-walled vacuum-sealed design. And how does double-wall vacuum insulation work, you may ask? In a nutshell: two walls of stainless steel are placed together, leaving a vacuum-sealed space between them. The absence of air in this vacuum-sealed space minimizes heat transfer.

What Is The Best Water Bottle To Keep Water Cold

TOP PICK:

IRON °FLASK Sports Water Bottle - Wide Mouth with 3 Straw Lids - Stainless Steel Gym & Outdoor Bottles for Men, Women & Kids - Double Walled, Insulated Thermos, Metal Canteen - Midnight Black, 22 Oz
  • INSULATED SPORTS WATER BOTTLE: Goodbye sweat! The...
  • 3 LIDS: YES, Iron Flask comes with THREE different...
  • 18/8 PREMIUM STAINLESS STEEL: The Iron Flask is...

RUNNER UP:

Sale
YETI Rambler 26 oz Bottle, Vacuum Insulated, Stainless Steel with Chug Cap, Seafoam
  • Get to drinking faster with the Chug Cap. It just...
  • This Double-Wall Vacuum Insulated water bottle has...
  • 18/8 stainless steel construction stands up to...

ON A BUDGET:

Sale
Polar Bottle Sport Insulated Water Bottle - BPA-Free, Sport & Bike Squeeze Bottle with Handle (Contender - Charcoal & Silver, 24 oz)
20,407 Reviews
Polar Bottle Sport Insulated Water Bottle - BPA-Free, Sport & Bike Squeeze Bottle with Handle (Contender - Charcoal & Silver, 24 oz)
  • VERSATILE FOR ANY ACTIVITY - Your go-to sports...
  • EASY TO CLEAN - The innovative Polar Bottle Sport...
  • MADE IN THE USA - Polar Bottle Insulated Water...

Water bottles that have insulation can slow down the above-mentioned heat transfer. 

Insulation works by creating a barrier between the contents of the bottle and the outside environment which reduces the amount of heat that can enter or leave the bottle. This means that the cold water inside the bottle will stay cold for a longer time. Win!

Let’s see some details about my selection for the

Best Water Bottles To Keep Water Cold All Day

TOP PICK:

IRON °FLASK Sports Water Bottle - Wide Mouth with 3 Straw Lids - Stainless Steel Gym & Outdoor Bottles for Men, Women & Kids - Double Walled, Insulated Thermos, Metal Canteen - Midnight Black, 22 Oz
  • INSULATED SPORTS WATER BOTTLE: Goodbye sweat! The...
  • 3 LIDS: YES, Iron Flask comes with THREE different...
  • 18/8 PREMIUM STAINLESS STEEL: The Iron Flask is...

Why is the IRON °FLASK Sports Water Bottle my top pick for a water bottle that keeps water cold?

Insulation: Double wall insulation. It keeps your drink COLD for up to 24 hours! (And if you fancy that, it keeps your drink HOT for up to 12 hours.) This type of insulation makes the water bottle sweat-free too.

Material: 18/8 Stainless steel that is 100% BPA-free and non-toxic. No metal taste or rust.

Size: From 22 oz (my pick) up to 64 oz. With the 64 oz, it doesn’t just keep your water cold for a day, but you don’t need many refills either.

Extras: I’m a sucker for different lids for different purposes, and it comes with three that I can vary, so I’m sold. Also, there is a 100% satisfaction guarantee: if for any reason, I wouldn’t be 100% satisfied with the Iron Flask, they will issue a full refund or an exchange.

RUNNER UP:

Sale
YETI Rambler 26 oz Bottle, Vacuum Insulated, Stainless Steel with Chug Cap, Seafoam
  • Get to drinking faster with the Chug Cap. It just...
  • This Double-Wall Vacuum Insulated water bottle has...
  • 18/8 stainless steel construction stands up to...

Why is the YETI Rambler my runner up choice for a water bottle that keeps water cold?

Insulation: Double wall vacuum insulated. They say it “has the power to keep your water cold (or coffee hot) until the last sip”. No sweat, of course.

Material: 18/8 stainless steel construction.

Size: A wide variety of shapes and forms, my pick is the 26oz bottle with the chug cap.

Extras: I’m lazy, so this bottle being dishwasher-safe is a plus for me.

ON A BUDGET:

Sale
Polar Bottle Sport Insulated Water Bottle - BPA-Free, Sport & Bike Squeeze Bottle with Handle (Contender - Charcoal & Silver, 24 oz)
20,407 Reviews
Polar Bottle Sport Insulated Water Bottle - BPA-Free, Sport & Bike Squeeze Bottle with Handle (Contender - Charcoal & Silver, 24 oz)
  • VERSATILE FOR ANY ACTIVITY - Your go-to sports...
  • EASY TO CLEAN - The innovative Polar Bottle Sport...
  • MADE IN THE USA - Polar Bottle Insulated Water...

Why is the POLAR Bottle Sport my budget choice for a water bottle that keeps water cold?

Insulation: Tri-Layer™️ (triple wall) insulation. It can keep liquid cooler for 2 times longer than older Polar models.

Material: LDPE, TPU Valve. 100% BPA-free, made in Colorado, USA.

Size: 20 oz or 24 oz.

Extras: It’s lightweight, making it a great hydration companion for all sports and activities. Also, dishwasher-safe.

All in all, if you want to keep your drink cold for a day, you likely can’t go wrong with an insulated water bottle, whichever you pick. Let me know in the comments if this post helped you to find the best water bottle to keep your water cold!

Cheers!

Featured image credit:
Photo by Lanju Fotografie on Unsplash

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