Color: Pink(S) Rim size. The collar is suitable for a neck with a circumference between approximately 9 and 25 cm. It has an adjustable Velcro fastener to tighten or loosen it as needed. Measure your pet’s neck with a flexible tape measure to make sure the collar will fit snugly and comfortably. This collar size is generally suitable for small dogs such as Chihuahuas, and cats and kittens. It is also ideal for many breeds of puppies that have undergone surgery. Collar Materials. Made of premium soft, sturdy and waterproof foam and fabric, scratch and bite resistant. Lightweight, washable, easy to clean and flexible collar for optimal comfort for your pet. Benefits of the collar. Adorable, comfortable collar of superior quality. Unlike rigid plastic medical collars, Meiso’s soft and comfortable collar does not make noises when the animal hits a wall or the floor. No risk of perforation. Product tested and approved by veterinarians. Ideal for animals injured or having undergone surgery.