"Pets Silk Harness P132" appears to be a specific product name for a pet harness. Here's a breakdown of what that likely means:

Pets Silk Harness: This describes the type of product. A "silk harness" is a harness made from silk or a silk-like material, possibly blended with other fabrics like nylon or polyester for durability. These harnesses are often marketed for their soft, comfortable, and elegant feel. They are typically used for smaller dogs or cats where comfort and style are a priority.

P132: This is a product or model number. It is not a standardized sizing system, but rather a unique identifier for that specific item within a manufacturer's or retailer's inventory. This type of product code is common for pet accessories sold by online retailers, particularly in Pakistan, where the brand "Pets" or similar names are popular.