This booster car seat helps safely transport your big kid from ages 4 -10, from 40 - 100 pounds and up to 57 inches tall. It also features Graco ProtectPlus Engineered, a combination of the most rigorous crash tests that help to protect your child in frontal, rear, and rollover crashes. The price drops from $28.99 to $21.74. Shipping is free for prime members or on orders over $35.