The Hopper(TM) Seat Insert and Sunshade Kit converts your Hopper wagon into a versatile, fully functional stroller wagon. Secure 5-point safety harness, comfortable seat padding, and sunshade ensure that your child is ready for an all-day adventure. Install up to two seats (rear- and forward-facing) to turn your Hopper into a double stroller wagon. FEATURES: Easily install in rear-facing or forward-facing stroller configurations 5-point safety harness Comfortable bottom and back seat padding Retractable canopy provides sun protection Can install two seats in Hopper for double stroller *Seat Insert accessory for use while strolling only. Do not bike with children in the Hopper