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  • High strength bear bag line
  • 1.8 vs. 2.2 mm

UrsaFly™ Bear Bag Line

    • Very low stretch, ultralight Trevo™ UHMWPE fiber
    • Slides easily over branches
    • Holds knots firmly
    • High tensile strength for hanging a bear bag
    • Throws easily while resisting tangles
    • Bright orange color for day/night visibility


    Ultralight and super-low stretch Trevo™ Ultra-High Molecular Weight Polyethylene (UHMWPE) fiber is braided to make this line.  The same type of fiber used for Dyneema® or Spectra®. The braiding is tight to avoid any snags or abrasion and allow the line to slide easily over tree branches. Using a rock sack, this line is easy to throw and will resist tangling if not coiled. A polyurethane coating helps the line wear longer and hold knots much better than uncoated Spectra lines.

    UrsaFly™ is easy to handle and plenty strong to hang your bear bag. And the bright orange color will help you see it in the trees and spot your hang from a distance.

    We like to use the PCT Method of hanging a bear bag, but the Counter-Balance Method works well too.

    The line is sold in 50 & 100 ft (15.2 & 30.5 m) lengths.



    Length: 50 or 100 ft (15.2 or 30.5 m)

    Material: Pre-stretched Trevo™ UHMWPE fiber (like Dyneema or Spectra)

    Coating: Polyurethane

    Color: Orange

    Diameter Working Load Limit* Breaking Strength Weight / 50 ft Weight / ft Weight / m
    1.8 mm 176 lb (80 kg) 882 lb (400 kg) 1.30 oz (36.9 g) 0.026 oz (0.74 g) 0.085 oz (2.42 g)
    2.2 mm 229 lb (104 kg) 1146 lb (520 kg) 1.78 oz (50.6 g) 0.036 oz (1.01 g) 0.117 oz (3.32 g)

    *WLL based on a 5X design factor (DF). MBS/DF=WLL. Trevo is manufactured by DSM Dyneema. Both Trevo and Dyneema are UHMWPE fibers with similar properties.



    • DO NOT use to hold or restrain human or animal weight.
    • DO NOT use in situations where personal safety or valuable property could be endangered.
    • Inspect before each use. DO NOT use if signs of wear are apparent, such as cuts, broken fibers, unraveling, abrasion, discoloration, or other signs of wear. When exposed to direct sunlight and outdoor elements, deterioration can occur.
    • DO NOT exceed the working load. When used under dynamic (stress, jerk) conditions, additional care must be exercised. These conditions can reduce the working load by as much as 33%.
    • Avoid using knots if possible; splicing is preferable. Knots reduce the strength of the rope up to 50%.
    • DO NOT stand in line with rope under tension; it may recoil (snap back) unpredictably if released or broken.
    • DO NOT use to secure large flat objects that could lift or dislodge through buildup of air pressure underneath.
    • Misuse can result in serious injury or death.

    In no event shall Litesmith, LLC be liable for any direct, indirect, punitive, incidental, or special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of its products.

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