PlayaPup Dog Shirt (UPF 50+), Dewberry, 4X-Large Fashionable, lightweight, and sun protective dog t-shirts (or dog rash guards as we like to call them) are great for water activities and to help prevent licking / chewing, great for after surgery UPF 50+ fabrics provide maximum sun protection by helping to block 98% of UVA and UVB, wet or dry Our fabrics are especially made to be free of suncreen chemicals and help to keep their coat clean Swim shirt fabrics provide 4-way stretch, are soft, comfortable, and are quick drying with flat lock stitching for superior quality Colorful designs to make a splash at the pool or beach! Great for those hot days, going on a hike, and any outdoor activity. See our size chart to the left, in images section.