The BOB Duallie applies the same engineering principles they use for their singles to a stroller designed for two children. The Duallie makes it easy to take young siblings (or playmates) just about anywhere-with plenty of cargo room for food, drink, clothing, books, and toys. The Duallie is easier to maneuver than front-and-back two-seaters (and our design reduces hair-pulling and pestering as well!). KEY FEATURES Adjustable tracking. Fast, compact and simple folding system, independent reclining seats, shock absorber suspension system with three inches of travel (wheel movement), padded shoulder harness for added comfort, red plastic pull rings for easy harness adjustments.