Take your dog along on rides with this bike trailer that fits most adult bikes through a universal coupler. The roomy 54.3 in cabin uses 600D Oxford fabric and dense mesh for airflow while a flip-down hard tailgate becomes a ramp so senior pets walk in instead of jumping. Reflectors a safety flag and 16 in pneumatic tires improve visibility and absorb bumps for medium dogs up to 44 lbs and 20.5 in long.