Personalized KC Cavalier Spaniel T-Shirt. Cavalier King Charles Spaniel dog breed art by Contemporary PUP Artist, KiniArt (aka Kim Niles). © KiniArt™ - All Rights Reserved. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.