The First Years Jet StrollerThe First Years Jet Stroller - Easier for You, More Comfortable for Your Baby!Finally, a stroller that is durable and, yes, it really will comfortably fit your little one up to 50 lbs. The wider seat base means a more comfortable ride for your child, which will keep them in their seat longer. The larger wheels (6" diameter), all eight of them, allow your First Years Jet Stroller to glide over any surface.