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Our award winning backpack designed for packrafting, and other heavy loads.

75L Pack | Best for:

  • Packrafting & Portaging
  • Trail work
  • Hunting


The Flex PR+ is a multi-use pack specifically designed for pack rafters

58.6 oz - 1660 g Pack

The Flex PR is a 75L dry bag with a removable suspension system designed for carrying heavy loads in comfort. Whether you are portaging on a canoe trip, hunting in the backcountry, or doing trail maintenance, the Flex PR will keep your gear dry, your accessories handy, and your back comfortable.



The Flex Pack PR+ is designed to handle the included 75L dry bag or the popular portage barrels. It has adjustable compression straps to help compress and stabilize any load. Dual removable side pockets are great for water bottles. Stash snacks, a rain jacket, or other gear securely in the zippered large gusseted front stash pocket.

The removable bottom stabilizer straps are perfect for packrafters using portage barrels and help ensure heavy loads ride easily. It even has an eight-inch wide stash pocket running the length of the pocket perfect for stowing a paddle.



Now you don’t have to suffer through carrying a load with a pack ill-designed for the job. The Flex Pack PR+ uses the same suspension system we use on our lightweight packs. That means it’s designed to carry heavy loads without needing a heavy pack. It’s unique oval shape and sturdy harness keep the loads closer to your center of gravity, so you don’t have to worry about a shifting pack.

It’s simple roll top design keeps your equipment nice and dry, even in the wettest conditions. It features a release valve that allows you to remove any excess air once the bag is loaded.

With four lashing points, the Flex PR+ stays secure in your boat no matter how gnarly the ride.







Torso Sizes

16" - 22" | 38 - 56 cm



Gray, Green, or Red


Maximum Load

45 lb | 20 kg


Minimum Load

20 lb | 4 kg



Pack Rafting
Trail Maintenance




Pack Body

420 Nylon robic or X-Pac VX21


Body Contact

3D Mesh



4 Way stretch




Robic Body

33.9 oz | 962 g


VX21 Body

35.5 oz | 1007 g


Shoulder Harness

5.7 oz | 162 g


Hip Belt

11 oz | x312 g


Dry Bag

9 oz | 255 g


Robic Weight

59.6 oz - 1683 g


VX21 Weight

61.2 oz - 1729 g

Flex PR Plus Pack Rafting Backpack

Contact For Availability
  • Flight Shoulder Harness

    ✓ Traditional backpack shoulder straps

    ✓ Two 4-Way Stretch Pockets that hold 500ml soft bottles

    ✓ Sliding sternum strap

    ✓ Covers less torso area

    ✓ Weighs ~2 oz less than vest harness


    Flight S-Curve Harness

    ✓ Designed to accommodate people with narrow shoulders that have a larger chest area

    ✓ Two 4-Way Stretch Pockets that hold 500ml soft bottles

    ✓ Sliding sternum strap

    ✓ Avoids covering chest for more comfort

    ✓ Weighs ~2oz less than Flight Vest Harness

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