Material High quality Leather fabric with sponge filler. Strong and durable, with good air permeability for a comfortable lean. Size Cylindrical pillow: 11 x 40 cm (4.33 x 15.7 in) Half-cylinder pillow: 13 x 40 x 7.5 cm (5.12 x 15.7 x 2.95 in) These shapes and sizes are ideal for lumbar support on office chairs, computer chairs, game chairs, and more. Ergonomic support Ergonomic back pillow helps you read with a proper posture in bed and reduces discomfort from poor alignment. Provides relief for lower and upper back pains, as well as shoulder and neck issues. Versatility Soft and comfortable, yet firm enough to provide cushioning and support. Suitable for office chairs, sofas, and other seating areas. Use scenarios - At a desk for long work or gaming sessions on office, computer, or game chairs. - Reading in bed to maintain an ergonomic posture and reduce strain. - Lounging on a sofa or other seating where extra back support is desired.