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But, some have warned that freezing a hot water bottle can damage the rubber, making it dangerous to use in winter with boiling water.
A Product Specialist at retailer Terrys has previously warned that freezing a hot water bottle can affect the integrity of the material and may even cause it to burst.
Rebecca Challinor explained to Ideal Home: “Whilst freezing your hot water bottle can be an effective way to have a better night’s sleep in hot weather, it’s advisable once you’ve done this to no longer use the same water bottle during the winter.”
People in the comments section of the TikTok video also warned other users of the dangers.
One person wrote: “Do not reuse with hot water in the winter as the rubber can stretch and pop.”
Another suggested having two hot water bottles, writing: “Have a summer bottle and a winter bottle. It can weaken the rubber and the last thing you want is it bursting with boiling water in it.”
Someone else came up with another alternative, commenting: “Put a bath towel in the freezer too! Once it’s frozen throw it between your blanket and sheet.”
The heatwave in the UK is expected to end today after the Met Office issued its first-ever Red warning for extreme heat on 18 and 19 July.