This item can be used for both heat retention and cold retention. I am selling it because I no longer have a need for it. I believe the condition is very good. ○ Product Details... Pearl Metal Water Jug, 3L capacity ○ Purchase Date and Price... June 2023, ¥3900 ○ Color and Size... Navy, 180mm x 210mm (to the spout) x Height 315mm ○ Frequency of Use... June-July 2023 ○ Condition of the Item... The inside is as shown in the photos, and is in a clean condition with hardly any signs of use. On the outside, there are a few small, inconspicuous scratches on the top. Capacity... 1-2.9L