Quickly add another passenger to your W-Series stroller wagon with the new WonderFold Buddy Board! This sturdy, slip-resistant ride-on board securely attaches to the back, making every outing more exciting for kids up to 44 lbs. Its durable, waterproof materials and foldable design ensure easy storage and lasting fun. Compatibility: Compatible with W2 and W4 WonderFold Stroller Wagons. W6 compatibility arriving soon! NOTE: Requires Rear Basket removal. For Pro Stroller Wagon series, the Rear Basket can be relocated to the front of the wagon.