The Subtech Pro Drybag 45L is a premium waterproof backpack/dry bag built for wet, rugged use. It’s known for being fully waterproof and airtight, with a shock-absorbing inflatable inner system that protects sensitive gear.
Main features
- 45-liter capacity, aimed at day trips, boating, and weekend use.
- Waterproof to 50 m / 164 ft according to the manufacturer and retailers.
- Airtight zipper and taped seams are part of the waterproofing design.
- Internal electronics pocket for items like phones, GPS units, and cameras.
- Ergonomic backpack handles and a body shape designed to sit comfortably on the back.
Protection system
A standout feature is the detachable inflatable inner liner, which creates a 360-degree air cushion around the contents. Subtech says this makes the bag shockproof and helps it float when properly used. That makes it more specialized than a normal dry bag, especially for fragile electronics or expedition gear.
Materials and build
The bag is described as using heavy-duty, high-durability materials such as Hypalon on newer Subtech Pro Drybag listings. Retail listings also mention premium construction, carry-on friendliness, and strong resistance to water and humidity. The design is clearly aimed at marine, outdoor, and adventure environments rather than casual commuting.
Price and positioning
A Sail Magazine listing put the price at $399. That places it in the high-end dry bag category, reflecting its specialized construction and protection system rather than just storage volume. For many users, the value is mainly in the combination of waterproofing, impact protection, and flotation rather than simple capacity.