Highlights - 1.Universal Coupler for Most Adult Bikes - This dog bike trailer easily attaches to 22-28 inch rear wheel bicycles with the included coupler-quick to set up, stable to tow 2.Spacious & Comfortable Cabin - With a 31.9 x 21.9 x 25.2 in interior, the pet cart bicycle carrier's cabin provides plenty of room for medium to large dogs. Pets can lie down or turn around comfortably, and the rear door ensures easy entry and exit 3.Weather Protection & Ventilation - The bike dog trailer's front clear PVC flap keeps wind and rain out, while the mesh panels provide excellent airflow and visibility. Your pet stays dry, cool, and calm, with protection from annoying critters 4.Safe Ride with Smart Features - Built-in leash keeps your pet secure inside the dog trailer. A rear reflector and flag improve visibility, while the reinforced steel frame provides reliable protection on the road 5.Foldable Frame, Detachable Wheels - This bike pet trailer folds down in seconds for compact storage or transport in your car trunk-great for trips or daily use Details - Dog Bike Trailer, Supports up to 100 lbs, Pet Cart Bicycle Carrier for Small & Large Dogs, Easy Folding Frame with Quick Release Wheel, Universal Bicycle Coupler, Reflector, Flag, Internal Leash