BOB recommends babies be at least 8 months old before running, jogging, or off road use BOB's Sport Utility Duallie Stroller is designed for outdoors-loving families who like to engage in off-road adventures with their twins or two different age children Compatible with the BOB B-Safe 35 by BRITAX and other brand infant car seats with the use of adaptors (infant car seats and adaptors sold separately) to create a complete travel system Each seat supports children from 8 weeks up to 50 lb. (100 lb. combined weight) Fits children up to 44" tall Stroller weight: 35.5 lb. Dimensions (unfolded): 54.5" L x 30.5" W x 40-44" H Dimensions (folded): 41.5" L x 30.5" W x 20" H Two 5-point adjustable safety harnesses Front-facing ultra-padded seats Height-adjustable padded handlebar Easy, two-step frame fold One-hand seatback recline adjustment from fully vertical down to 70º High-strength chromoly and aluminum frame Poly and Dobby weave fabrics with water repellent coating and open cell foam padding 16" x 2" air-filled knobby tires on high-impact polymer rims with enhanced quick release State-of-the-art adjustable full suspension system offers two stages of weight support for an ultra-smooth ride Foot-activated parking rear brakes and hand-activated caliper brake on front wheel for added deceleration control Fixed front wheel provides added stability Front wheel tracking adjustment knob keeps you rolling straight Spot clean Extra-large, UPF50+ rated adjustable canopies with viewing window Wrist strap with buckle helps you secure stroller when strolling/jogging and locks stroller in the closed position when folded Four interior mesh pockets and two large seatback pocket for storing snacks, drinks and other necessities Extra-large cargo basket