Sun Shield Dog Tees are great protective spring and summer shirts for your dog! The Sun Shield Tees use the same shape and fit as the beloved Stretch Fleece in a silky, light-weight jersey that is UPF 50+ rated so it blocks over 98% of UV rays. The Tees significantly reduce heat absorption while out in the sun, especially for dark colored dogs. They are also amazing for wound-care, skin-conditions and as a snug-fitting calming garment that can be worn safely and comfortably all day. Measuring For The Sun Shield Tee: The size of the coat refers to the length of your dogs back. Measure from the base of the neck to the beginning of the tail. Regular size refers to the measurement around the widest part of your dog's chest. WEAR TIP: The center chest seam is designed to be on the outside - it's a hefty seam and we wanted dogs to enjoy maximum comfort especially in that tender area. Machine wash, tumble dry low or hang to dry (dries super fast!)