3 Sizes Pack: Package includes 3 different sizes of leather harness (small, medium, and large), suitable for rats of various sizes from young to adult (200g - 500g). Note: Not suitable for obese rats. Ideal for pet owners who have multiple pets, this set offers a convenient solution for different size needs. Premium Material: These harnesses are made of high-quality leather and stainless steel, providing strength, durability, and resistance to wear. The soft leather ensures a comfortable fit for your pet. Intimate Design: Featuring a vest-style design for easy on and off. The double secure fastening system, including snaps and metal ring attachments, ensures a snug and secure fit. Includes a retractable leash to maintain an ideal walking distance. Easy to Use: Simply place the harness over your pet's chest, insert the front legs into the designated holes, fasten the buckle, and connect the leash to the two metal rings.