sentences:  Along with its propulsion system (collapsible paddles or lightweight oars) and safety equipment (PFD, clothing) the entire package is designed to be light and compact enough for an individual to negotiate rough terrain while carrying the rafting equipment together with supplies, shelter, and other survival or backcountry equipment.Modern packrafts vary from inexpensive vinyl boats lacking durability to sturdy craft costing over US $1,000.Most weigh less than nine pounds (4 kg) and usually carry a single passenger.