A cervical collar dimensioned to fit a human patients neck is constructed primarily of foam. It has a foam body with a main top surface and a bifurcated (“M”-shaped) top portion which extends significantly upwardly from the main top surface so as to allow the midline of the occiput to float, thereby minimizing ulceration-causing pressure. The foam body may have a density of at least about 1.4 lbs/ft3, and a mound like bottom projection may extend from a main bottom surface thereof. The foam body may have slits formed in it, and a rigidity-enhancing element is inserted into a slit. By inserting different rigidity-enhancing elements the rigidity of the foam collar may be adjusted. The rigidity-enhancing element may have a C-shape with a hinge spring between two rigid portions.