POSH365 "Bark Like A Rockstar" Dog Tee Shirt Lightweight and comfortable - Elastic Neck and Sleeves Made in USA Versatile Style. Great for any occasion Size Chart: Small (8-10LB; 10in. Length; 9.5in Neck); Medium (11-25LB; 12in. Length; 9.75in Neck); Large (26-40LB; 15.5in. Length;16.75in Neck); X-Large (41-60LB; 17.5in. Length; 19in Neck); 92% Cotton/8% Spandex - Care Directions: Machine Wash Cold; Dry Flat