Dog Backpack/Saddlebag, One Size, With Adjustable Straps. Bonus E-book With Purchase. Dog Backpack is Easy to Get on and Take Off. Perfect For A Long Walk Or A Short Stroll. Fits Med. to Large Dogs. Perfect for Travel Hiking Camping or Strolling with your dog One Size - Easy to adjust for the perfect fit, zipper pockets, velcro pockets and mesh pockets Safety Reflective Strips on both sides for high visibility and harness also has a leash hook for safety and convenience Rugged Oxford fabric is breathable and machine washable Soft lining and extra padding for comfort and spine support