Touted as the lightest roll-top storage sacks on the market, the waterproof, transparent, Uberlight CTF3 Drysacks from Granite Gear shave precious grams from a backpack. The company says they weigh in at half the gram-age of comparably-sized sil-nylon bags. The secret fabric is a “non-woven laminate material.” Available in four sizes, the smallest one, at seven liters of capacity, weighs a miniscule 15 grams on Granite Gear’s scale. But you pay for the weight shave: The prices range from about $39 to almost $50 for these high-tech storage sacks.
