As it gets colder here, my feet gets cold too especially during bed time at night. This heated socks has changed my life and helped me sleep so much better with my feet heated! The battery life is pretty reasonable as it lasted pretty long for me after one charge. Not to mention the socks is soft and cozy, not a single bit uncomfortable for me. I have not washed it personally, but it shouldn’t have any problem seeing the good quality of the socks. Definitely recommending to those with cold freezSee full review