The Britax Child Bike Seat is the ultimate in ease of use. With the innovative click and cruise bracket, attachment and removal from the bike is quick and easy. The 9-position head rest and 15-position foot rests each adjust effortlessly to comfortably fit children from 9 months to 4 years and up to 40 pounds (18 kg). The tall backrest, deep sides, 5-point harness, and integrated spoke guards keep children safe and secure while the built-in suspension, 2-position recline, shoulder pads and breathable padding keep them comfortable. The machine washable padding is also reversible with two color options, red and gray. For us with children 9 months to 4 years old and up to 40 pounds (consult a pediatrician for children under 1 year old).