Ergonomic Video Rocker Chair. The Adult Video Rocker Chair is made of high quality vinyl fabric and double stitched seams for durablility. The ergonomic seating position is great for enhancing posture and stability. Excellent for reading, playing video games, watching TV, relaxing. Materials: Vinyl Dimensions: 21.5″L x 15.875″W x 32″H Weight: 10 lbs