This foldable bike trailer lets medium to large dogs ride along safely and comfortably. The pet cabin measures 31 x 20.9 x 21.6 inches, giving plenty of room to lie down or turn around, with a rear door for easy entry and exit. A universal coupler fits bicycles with 22-28 inch rear wheels, so it attaches to most adult bikes in minutes. Built from carbon steel wrapped in 600D Oxford fabric with a PP shell, the trailer holds up to 88 pounds. A clear PVC flap blocks wind and rain up front while mesh side panels keep air moving and let your pet see out. An internal leash clips inside the cabin to keep your dog secure, and a rear reflector plus tall flag help drivers spot you at dusk. When you are done riding, quick-release wheels and a folding frame collapse the trailer to 30.9 x 23.8 x 7.5 inches for easy storage in a car trunk or closet, and at 25.8 pounds it is still manageable to carry between rides.