A shoulder strap is a long, narrow piece of material designed to help carry or support an object, typically worn over the shoulder. It is commonly found on bags, backpacks, and purses, allowing for easier transport of items while distributing weight evenly across the body. Shoulder straps can be made from various materials, including fabric, leather, or synthetic materials, and often feature adjustable lengths for comfort. Some straps may also include padding for added support, making them suitable for carrying heavier loads, such as laptops or sports equipment.