Contoured memory foam supports your natural curve and helps ease everyday driving discomfort. Stretchy, breathable jersey knit cover stays cool and resists heat buildup during long commutes. Two adjustable straps keep the cushion locked in place on most car seats and chairs.Removable cover with built-in zipper is machine washable for quick, low-effort cleaning. Use low for lumbar relief or higher for upper-back support based on your needs. Portable design moves easily from car to office chair for continuous comfort everywhere.Generous size measures approximately 20 inches tall by 16.9 inches wide for broad coverage.