The Collar sits across the neck and shoulders and fastens through a loop, so it stays where you put it without tying.
Three heat settings. 42°C, 48°C and 55°C (108°F, 118°F, 131°F). Hold the button for three seconds and it starts warming.
Runs on 5V USB, four watts. Plug it into a power bank, a laptop, or any USB adapter — so it works at the desk, on the couch, in the car, or out on a walk. No batteries to replace, no water, no waiting for a kettle.
