It’s a double-layer towel with a large pocket at either end. Slip one hand into each pocket for easy drying control; the wide center of the towel stays between you and the wet doggie-dog. Start with a standard beach towel.
As a more playful alternative to the traditional monogrammed bath towel, try bright appliqué. Make a set for the whole family – each with its own initial in custom colors. A full appliqué alphabet included as a free PDF download.