SealLine Blocker Dry Sack

Easy-Hauling Gear Protection for Journeys Near and Far.

SealLine, a division of Cascade Designs, specializes in dry bags, packs, duffles, gear protection, sea kayak bags & accessories, and urban bags.

Founded in the early 70's by three Seattle engineers, they got their start with the infamous Therm-a-Rest - the world's first self-inflating mattress.

Today, they're fortunate to remain a private, family-owned company that has grown to be one of the most respected outdoor manufacturers in the world.

They've achieved that distinction through a combination of the Therm-a-Rest brand's enduring popularity, the acquisition of strong companies with superior products and shared visions, and by sticking to the same fundamental principles they were founded upon: providing relevant and innovative products, exceptional quality, and service that exceeds your expectations.