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  • Hydraulic dry bags are designed for heavy use and feature very tough, laminated fabric and welded seams; they also have a high resistance to UV light and cold temperatures
  • Harness promotes cooling airflow with EVA foam and quick-drying mesh, and it features an adjustable back length and height-adjustable sternum straps
  • Removable harness attches via a series of very tough, anodized aluminum buckles, and low-profile attachment points reduce snagging when harness is removed
  • Thermoplastic urethane (TPU) roll-top closure seals easily and provides reliable waterproof performance
  • Oval base resists rolling and stays where you put it
  • Durable attachment points secure dry bag to a pack or kayak
  • The 90L Sea to Summit Hydraulic dry bag is PVC free
  • Not intended for prolonged submersion


View all Sea to Summit Dry Backpacks

REI membership


Best Use Paddling
Gear Capacity (L) 90 liter
Gear Capacity (cu. in.) 5,492 cubic inches
Shoulder Straps Yes
Waterproof Yes
Dry Bag Shape Cylindrical
Material(s) Polyester w/ double-sided TPU laminate
Dimensions 39.4 x 16.5 x 11.8 inches
Weight 3 lbs. 8 oz.
Rated 1 out of 5 by from Horrible attempt at a bag to be carried If you want a dry bag, well this is a dry bag. If you want to carry anything more than a few feet, look elsewhere. All attachment points are very poorly designed and do not support a load at all (even with a foam pad roll on the inside to make the bag rigid) the hip belt is also poorly attached and appears to be made for a child. I have a 32" waist and it does not come close to wrapping around to the front of my body. The shoulder strap lower attachment point is not located properly and cuts into your torso. Poor attempt at what could have been a good bag packrafting. I will be returning this.
Date published: 2013-05-31
Rated 5 out of 5 by from Bomber dry bag for canyoneering I had already bought the 65 L size hydraulic dry pack when I read the one star review. So I was worried that the pack was going to be uncomfortable. I mainly want the pack to be a portage pack for my gear when I'm paddling but also when I'm canyoneering. Anyway, I tried the pack on a two day canyon hike and it worked great. The harness worked great with about 35 pounds of gear. I would like the hip belt to be a little longer when I am carrying the pack but it was pretty comfortable. You have to be carefull that hard things inside the pack don't dig in your back. The shoulder straps are really good. It's a bit tricky to get the back length adjuster to slide in and out but I got a really good fit. I'm 5' 8" and I have a 34" waist. The dry bag is really bomber and is lighter than my old portage pack. The label it came with said Super Heavy Duty. It has loops on the side that would be good to fix it with cinch straps in a boat. The seal at the top of the bag has ridges in it that fit together when you roll the top over. The buckle has a really cool feature you can replace it if it gets broken. All you have to do is take a screw out. This is a comfortable pack that is easy to attach the harness and remove it.
Date published: 2013-11-14
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