The new Ortlieb Dry Duffles are the highest quality bag of this type you can purchase, period. The German blended pvc of the Ortlieb's could easily be used to build inflatable touring kayaks. Not only does it have a tough 1000 denier polyester base, but the acrylic finish exterior is hard and abrasion resistant. This listing is for the "large" 85 liter volume bag, which is the middle of the three sizes of standard Ortlieb Duffles. It measures 25" long, 15" wide, and 14" tall. If you look at the manufacturer's figures, you will notice they vary somewhat from ours, but we're just giving what our tape maesure says. This Large Duffle weighs three pounds.
All three sizes of the Expedition Dry Duffles feature a completely watertight drysuit zipper, two inside pockets for small items or dirty riverwear, one outside zippered mesh pocket, a strip of daisychains on each side of the zipper that 1" cam straps will pass through, pegs on the ends if you want to stand your bag on a flat floor, removable contoured carry straps that can double as shoulder straps, cordura reinforced corners and bottoms, and an internal compression strap that can make closing the zipper easier if the bag is fully loaded. There is also a ladderlock piece of hardware at each end of the zipper that a camlock strap will pass though. Between these, the daisychain patches, and the handle webbing, there is no shortage of ways to tie this bag ultra-securely into your river boat. The only negative thing we could say about the Ortlieb Duffles is that the combo shoulder/carry straps are not well padded for backpacking.
We stock this size in white with black trim and bottom. If you have a sleeping bag that compresses well, this should hold most or all of your gear for an overnighter, minus a pump or spare paddle.