PET GEAR AT3 ALL TERRAIN NO ZIP DOG STROLLER - REDNew and Improved! The Next Generation AT3 Dog Stroller from Pet Gear is rugged, great looking and very easy to use. In fact, this is perhaps the best pet stroller on the market today. Oustanding Dog Stroller Features The AT3 Dog Stroller comes with a front step, making it easy for pet access. It also comes with a free wind and rain cover, as well as safety reflectors for night use. There is a parent tray, a large storage basket, and you can load your