A container comprises a container body for containing contents to be heated or cooled, a thermic module at one end of the body, and a closure at the other end of the body. Within the thermic module, an internal exothermic (or, alternatively, endothermic) 
chemical reaction is initiated to heat its contents when a user actuates the thermic module. The thermic module includes a 
heat exchanger portion extending proximally into the container and a thermic module cap distal to the 
heat exchanger portion. The 
heat exchanger portion has a pleated wall to improve the 
heat transfer to the contents of the container. The container includes a rotatable cover adhered to the container end over the closure with heat-sensitive 
adhesive that prevents a user from accessing the contents until a certain temperature is reached. The container further includes a full panel pull-off which covers and protects the 
actuator from being actuated until the pull-of lid is removed from the full panel pull-off. The thermic module may also include a filter disposed in interfering relation with the thermic module vents, including a portion between the inner and outer 
actuator buttons, to block egress of any particles of the 
solid reactant or the 
reaction product.