Size M is suitable for dogs with chest scale 53-63cm/21-25in. See our size guide in photos and measure your dog accordingly. In between sizes, choose the larger one. Durable stain and water-repellent materials with soft breathable padding for comfortable daily use. High quality Duraflex buckle and lightweight aluminum hardware. Hand wash in warm water with mild detergent / Machine wash 30ºC (use laundry bag). Stay visible when it’s dark outside with the efficient 3M reflective trim for enhanced visibility in low-light conditions. The adjustable straps, large velcro-panel and 3D shape ensure safe walks and adaptation to the individual dog’s body shape. The ergonomic design is gentle on the dog’s back and neck areas. The Comfort Walk Go Harness from DOG Copenhagen is a comfortable and lightweight step-in harness designed for small and medium sized dogs. The harness is easy to use and comfortable for the dog to wear during any level of exercise.