Features. Size: medium. Material: polyester, nylon, synthetic fur, plush. Dimensions: 24 X 24 X 8 inches. Weight: 2.16 lbs. Color: dark gray color. Most dog owners hate admitting they fear buying donut dog beds due to their fluffy and soft nature that make them susceptible to damage fast when dogs chew or bite them. The National Cowboy & Western Heritage Museum in Oklahoma City is America’s premier institution of Western history, art and culture. Founded in 1955, the Museum collects, preserves and exhibits an internationally renowned collection of Western art and artifacts while sponsoring dynamic educational programs to promote interest in the enduring legacy of the American West..