When you put a Hydro Flask go in the refrigerator, it won’t cause any damage for the metal bottle no matter how much long time it is, so you can worry free to put your hydro flask in refrigerator if you want to freeze water liquid inside the flask, but don’t forget to remove the bottle cap of your hydro flask or the cold temperature [refrigerator] outside of the flask can’t affecting the temperature of the liquid inside the flask, because the all Hydro Flask water bottles are made from double walls of stainless steel 18-8 with vacuum insulation plus TempShield lid, which can stop cold from inside to outside also stop cold from outside to inside, even you do remove bottle lid then put your hydro flask in the refrigerator, it is still have a much longer time to freeze liquid inside the flask, the advice is “No need to put Hydro Flask water bottles in refrigerator if you wan to freeze water liquid, that would waste too much time, you should freeze stuff then put into Hydro Flask to keep it cold for a full day long“
There are two different situations would happen if you put Hydro Flask in the fridge.
- Hydro Flask with Tempshield Lid, that means the whole flask is insulated that has difficult time for cold temperature outside the flask to affect water liquid inside the flask, it would be no different from container bottle like plastic bottle, glass bottle, or single wall stainless steel bottle.
- Only Hydro Flask water bottle without lid, it still need much longer time to freeze water liquid inside the flask by fridge, cold temperature only can go into flask through the opening mouth, I would rather to freeze water liquid with a glass water bottle in the fridge, then fill the ice cold water into my Hydro Flask to keep it cold for a long day to drink.
Hydro Flask keeps cold 24 Hours Up.
With its advanced vacuum insulation plus TempShield technology, Hydro Flask water bottles work very well to keep your ice cold drink for a full day long 24 Hours up, no matter you are staying at home or have a party in the hot beach in Summer season, you can rely on Hydro Flask to bring your favorite cold drink anywhere anytime.
Hydroflasks made by double walls of stainless steel 18-8 with vacuum insulation technology plus TempShield lid, can virtually eliminate the convection process and temperature change, then your drink will stay ice cold in a hot Summer day, because heat can’t go through without in a vacuum space without air.