Muddy Safe-Line Black MSA500. This unique safety system eliminates the need for clumsy climbing belts by allowing you to stay attached to the tree at all times Designed for added safety in the field the 30' Safe-Line has a prusik knot that slides up and down the braided nylon rope as you climb and descend and stops you immediately should a fall occur. Compatible for 2 hunters and can be used with any treestand. Weight rated for 300 Lbs. and available in one or three pack quantities. Specifications for Muddy Safe-Line: Manufacturer: Muddy Color: Black Package Type: Box Package Contents: Muddy Safe-Line Unique system that allows the user to stay attached to the tree at all times. Features two Prusik knots that easily slide up and down the rope during ascent and decent; stopping the user immediately in the event of a fall. Constructed of braided nylon. Weight rating: 300 lbs.