Gaeinssa is an online wholesale shopping mall specializing in clothing and supplies for dogs. Its range covers everyday wear and seasonal styles, including sleeveless tops, T-shirts, vests, fleece, dresses, full-body outfits, raincoats, jackets, padded coats, and capes. The store also offers accessories and a broad selection of toys, such as nose-work toys, rope and plush toys, and latex designs shaped like animals, fruit, and familiar objects.

Beyond clothing and toys, Gaeinssa stocks practical pet-care essentials across hygiene, medical and grooming categories. These include bathing products, combs and brushes, oral-care items, health-support products, and waste-disposal supplies. Customers can also browse walking and outing gear, feeding bowls and other convenience items, packaging supplies, and discounted clearance products.

The website features new arrivals and popular dog apparel, with many garments presented with barcode labels and hanger packaging. Some listings note same-day dispatch for orders placed before 12:30, while shipping is shown as parcel delivery.