1923 Size: Large (31" L x 24" W) Features: -Snuggly sleeper. -Cuddly bed measures oval. -Recommended for indoor use. -Removable heater, washable covers. -Warms to pet’s normal body temperature when in use. -MET listed. Color: -Green. Generic Specifications: -Uses only 6 watts. Dimensions: Size Large (31" L x 24" W) - Overall Height - Top to Bottom: -5.5". Size Large (31" L x 24" W) - Overall Width - Side to Side: -24". Size Large (31" L x 24" W) - Overall Depth - Front to Back: -31". Size Medium (26" L x 20" W) - Overall Height - Top to Bottom: -5". Size Medium (26" L x 20" W) - Overall Width - Side to Side: -20". Size Medium (26" L x 20" W) - Overall Depth - Front to Back: -26".