The Trinity unharnessed booster seat from Mother's Choice has a narrow seat design, covered armrests for comfort and a 6 position adjustable headrest. Easy push/lift for 6 position headrest adjustment. Covered armrests for added comfort. Narrow seat design to fit 3 across the back seat. Reclinable back for fitment into most cars. Machine washable covers. 2 year warranty on the covers, 6 years on the hardware. Suitable for: 4 years approx - 6-8 years approx.