Baby Rib (100% Cotton) construction. Cut to avoid doggie mess. Will shrink an average of one size when put in the dryer. Sizing - Weight/Length(of shirt)/Neck: Small=8-10 lbs./10'/9.5', Medium=11-25 lbs./12'/9.75', Large=26-40 lbs./15.5'/16.75', XL=41-60 lbs./17.5'/19'. Print may be placed or sized differently, and colors may appear slightly different, than in the image shown. Unique, copyrighted design by TooLoud (Trademark) brand. Authentic TooLoud brand, printed in the USA with pride. This is not an unauthorized replica or counterfeit item. This is an original inspired design and does not infringe on any rights holders rights. The words used in the title and/or search terms are not intended to imply they are licensed by any rights holders.