Hydraulic Dry Pack
BEST USE: Paddle Sports
WATERPROOF? The fabric is more than adequately waterproof (10,000 mm hydrostatic head) – just avoid submersion, as water can seep through the roll-top closure
DURABILITY: High tensile strength and abrasion resistance make Hydraulics perfect for whitewater and overland adventures
DIMENSIONS: 16.5 x 11.8 x 39.5 inches
Shipping & Returns
Our warehouse is actively shipping orders from 8am to 1pm MST Monday through Friday. Most orders ship in one business day, but the transit time can take up to 7 days, depending on your distance from Boulder, Colorado.
2nd Day and Next Day Air orders will ship same day if placed by 1pm MST, Monday-Friday (except holidays).
All orders are eligible for fast and easy returns within 60 days of purchase.
For more details, please check out our Help Center
The Hydraulic Dry Pack is a super heavy duty dry pack ideal for river running and canyon runs. Whether hauling gear through an airport, portaging on a paddle tour, or carrying equipment in the field, the EVA foam and air mesh harness will deliver ventilated comfort for small or large loads. The removable harness attaches to compatible Hydraulic Dry Bags with strong, lightweight aluminum buckles.
The burliest fabric in all of Sea to Summit's products, this is constructed similarly to our Stopper fabric but has a few key differences. The Hydraulic fabric starts with a 600 Denier carrier fabric, then has TPU laminated to both sides of it to create an unstoppable waterproof, abrasion, and puncture resistant fabric. With two full and separate layers of TPU, you have some built-in redundancy against holes from abrasion. This fabric is also UV stabilized and won't crack in the cold.
Thermoplastic Urethane (TPU) is a PVC-free material used in a number of functional areas within Sea to Summit products:
- As an airproof barrier in our Air-Sprung Cell™ and Self-Inflating mats. Here it is used in a liquid-extruded format – the TPU bonds to the face fabric for the highest possible level of reliability.
- As a waterproof barrier in our Accessory Guide Cases and Map Cases; and in several models of our Dry Sacks. Here it is used in a film format, where its superior flexibility (even in cold weather) and waterproofness are key.
- As a waterproof barrier in the Nylon Folding Bucket. This particular film is also food grade – ideal for water storage.
- As a transparent window in View Dry Sacks and Travelling Light products – allowing you (and TSA inspectors) to see the contents.
This product is free of any Polyvinyl Chloride (PVC). This means that the production process is significantly more environmentally friendly, and the disposal of the product at the end of its life will also not burden the environment. With advances in modern polymers, it also means there's no reduction in performance.
Best UseCanyoneering, Base Camp, Paddle Sports, Bike Touring
Number of Exterior PocketsNone
Pack AccessTop (rolltop)
Repair Buckle Size1in | 25mm (2-Pin)
|35 liter||65 liter||90 liter||120 liter|
Frequently Asked questions
Going to last?
Yes, the construction and durable materials of the pack with hold up with correct care.
35L waist strap be replaced with the 65-130L hipbelt?
Unfortunately not. The 35L waist strap has vertical attachment points, the 65-130L hipbelt has horizontal attachment points.
Be used for canyoneering?
Yes, it can. Keep in mind - canyoneering packs are often used as friction devices when sliding down rock faces: in this kind of environment any pack will wear through after a couple of seasons.