A neck warmer with increased ergonomics and efficiency, particularly for cervical thermotherapy, comprising a band made of fabric having, at a central portion, at least one pocket for accommodating a heating element, wherein the fabric band is associated substantially along its entire length with at least one substantially C-shaped preformed stiffening lamina, for wrapping it around a users neck to be subjected to heat treatment, the stiffening lamina can be shaped manually to adapt its shape to the shape of the neck to be subjected to heat treatment, the portion of the fabric band in contact with the neck to be subjected to heat treatment can be provided with a heat-conducting strip for the diffusion of the heat generated by the heating element along the entire length of the fabric band and thus along the entire part of the neck to be subjected to heat treatment in contact with the fabric band, moreover, there can be a layer of shape memory material defined on the inner side of the stiffening lamina to increase the comfort and fit of the neck warmer, the access of the pocket can be defined on the outer side of the fabric band to prevent direct contact between the skin of the user and the heating element.
