, , , , because these are double-walled and thus keep either hot or cold, depending on the intention This here is a good, but then the plane normal steel bottle, as I with hot water realized painfully during initial filling, because it was outside (unlike thermos bottles!) abruptly sooo hot that I had to let them off immediately, to me not much more to scald your hands. So Be careful when filling - or equal AWAY - if you're looking a genuine thermos - all other aspects are OK - Design - closure - and the cheap price Too bad - Amazon had better pay attention to how a product is advertised - Thermos here qua its definition clearly inappropriate to be misleading.