This dog bike trailer gives a medium-sized dog, or a couple of smaller ones up to 24 inches tall, a roomy 31.9 x 22 x 24.4-inch compartment to relax in while you ride, with a weight limit of 100 pounds. The powder-coated carbon steel frame pairs with tear-resistant 600D Oxford fabric that's both waterproof and sunproof, so the trailer holds up outdoors in sun or rain. A front door combines a zippered mesh layer with a PVC canvas panel, so you can fold the canvas down for airflow on warm days or lower it to shield your pet from wind and rain. Zippered front and rear doors make loading and unloading easy, and your dog can even poke its head out through the mesh for fresh air. Four reflectors plus a high-visibility flag help keep the trailer noticeable to traffic in low light. The coupler connects to most bikes with 22 to 28-inch wheels, and the frame folds down to 31.9 x 22.4 x 7.7 inches with removable wheels for compact storage between rides.