Abstract: Animal harness, including blankets and straps, provides low pressure internal pneumatic elements to aid in padding harness effect on an animal and in ventilating animal body portions thereunder. A blanket provides an air pervious felt element folded upon itself and sewn to form a plurality of adjacent open-ended pockets, each carrying an inflatable bicycle tire inner tube deformed to fit in a pocket with two side-by-side courses. The felt element is covered by an air pervious fabric cover. A harness strap provides two similar mesh side elements joined about adjacent peripheral edges by banding to define a medial channel. A strap having connectors at each end and a medial cross strap is joined to the outer surface of one mesh side element for strength and to allow fastening to other harness structure. The medial channel defined by the strap carries an inflatable bicycle tire inner tube deformed to an elongate shape.