Sling backpacks are hands free that's why it provides different ways on how people can wear it. Its versatility is one of its advantages. It can be worn across a body, close to a chest, over the shoulder or even at the back. Straps are adjustable so people can find the perfect fitting for them. Most of them have built-in pads to make it more comfortable to use. Some sling backpacks also have breathable panels preventing people from feeling hot and getting sweaty.