The perfect accessory for growing families, this sibling seat allows you to easily transform your single Thule Sleek stroller (sold separately) into a double stroller without compromising style or functionality. Crafted from premium materials, this sleek black seat reverses to either parent-facing or forward-facing position. Whether running errands or catching a nap on the go, your child can rest comfortably in the 3-position reclining seat. Little ones will also appreciate the large seating area and extendable UPF 50+ canopy with peekaboo window for the sunniest of days.