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SealLine Black Canyon Boundary Pack review
Written by Jason Elliot   
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SealLine Black Canyon Boundary Pack images/SealLine

SealLine, part of Cascade Designs family of brands, is a leader in the design and manufacturing of waterproof bags, cases and enclosures.  The SealLine Black Canyon Boundary Pack lives up to the company’s reputation.

Black Canyon Boundary Packs are available in 3 different sizes – 35, 70 and 115 liters (2270, 3940 and 6940 cubic inches). If you are going on a nice leisurely float down the river for the day, the smallest size gives plenty of room.  The larger sizes provide added space for overnight jaunts with the largest size geared to accommodate longer trips.

The SealLine Black Canyon Boundary Packs give a dry bag features that you would find on a backpack.  Some of the pack’se features are:

  • Removable suspension system with waist belt (sternum strap is on the smallest size)
  • Urethane- coated nylon body and bottom
  • Roll top closure with dual straps which buckle to the pack’s front
  • Side compression straps to stabilize load

The construction of the Black Canyon Boundary Pack is to the high standards set by SealLine.  The pack can take the punishment of scraping against rocks and the other abuses that you experience on the water or ascending a rock chimney.  Common sense should tell you that the pack is not puncture proof.

The harness system snaps off easy if it is not needed on your next excursion.  The Black Canyon Boundary Pack’s waterproof ability rang true through extensive exposure to water when tested.

The roll top is a cinch to close and secure with the dual straps and buckles.  The side straps and buckles is an added option that you don’t see with most dry bags.  It provides a bit of compression while securing and stabilizing the load you are carrying.

The most practical use for the SealLine Black Canyon Boundary Pack is for paddling trips. The suspension system frees your hands to carry a boat to the river or carry other gear.  The pack can easily be secured in a canoe or kayak.  The greatest feature of the Black Canyon Boundary Pack is it’s waterproof ability.  It doesn’t have the design or features to take on long day hikes or extensive backpacking,  but it can work for shorter day hikes.

SealLine_LogoThe SealLine Black Canyon Boundary Pack comes in 4 different colors – black, blue, green, and yellow.  They are made in the USA in Seattle.  The Black Canyon Boundary Packs have an MSRP range from $99.95 to $119.95 and carry SealLine’s limited lifetime warranty.

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Jason Elliot

JElliotJason Elliot is the Editor and Publisher of Elliot has established a respected following with the top industry professionals and gearheads for his nonbiased reviews of outdoor gear and apparel. Elliot is a regular contributor to, and other publications on top of his editorial and writing role with

Elliot left a successful fifteen-plus year management career that he worked at Fortune 500 and S&P 500 companies to pursue his passion for writing about the outdoors. He holds a bachelor’s degree from Clarion University of Pennsylvania and a master’s degree from La Roche College.

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