Harnais Chien Expert is an online retailer specializing in dog harnesses and walking equipment, with products organized by a dog’s size, age, breed, mobility needs, and activity. Its range includes anti-pull harnesses, Y-shaped and three-point designs, reflective and padded models, options for small and large dogs, and support harnesses for dogs with disabilities or reduced mobility. The collection also covers canicross and other sports, hiking, car travel, tactical use, and escape prevention. Many harnesses are offered in multiple sizes, with a sizing guide and a measurement tool to help customers select a fit based on chest circumference.

The store also sells leashes, including an shock-absorbing tactical leash with a double handle, car safety belts, and accessories such as dog waste-bag dispensers. Its website provides care and selection guides, order tracking, and information about delivery and returns. The retailer advertises free delivery in France, 30-day returns, and a satisfaction guarantee. Customer reviews and product ratings are featured throughout the site to help shoppers compare options.