Common Features of a "Medium" Dog Leash:

Size and Weight Capacity: A medium leash is typically designed for dogs that weigh between 15-20 kg (33-44 lbs). It's built to withstand the pulling force of a dog in this size range.

Length: The length can vary. Some are fixed-length leashes, often around 5-6 feet (1.5-1.8 meters), which is a standard length for walking and training. Others are retractable leashes, which can extend up to 5 meters (16 feet) or more.

Material: They are commonly made from durable materials like nylon webbing, nylon rope, or sometimes PVC-coated nylon for easy cleaning and water resistance.

Hardware: The leash will have a metal clasp or hook (often made of nickel-plated or brass-plated steel) to attach to a dog's collar or harness. These are usually designed to be rust-resistant and durable.

Handle: The handle is typically padded or has an ergonomic design to provide a comfortable and secure grip for the owner, reducing hand strain during walks.

Safety Features: Many modern leashes include reflective stitching or threads to enhance visibility during low-light conditions, which is a crucial safety feature for evening or early morning walks.

Usage: A medium leash is suitable for everyday activities like walking, hiking, and basic obedience training.