30–40L for daily gym use or overnight trips; 50–70L for week-long travel; 100L+ for expeditions.
: Widely considered the best overall duffle due to its "bombproof" 900-denier recycled polyester construction and versatile carrying options. buy duffle bag
: Modern designs like the Nemo Double Haul can convert from a traditional duffle to a large tote for maximum versatility. Duffel & Wheeled Bags Size Chart by Patagonia 30–40L for daily gym use or overnight trips;
Look for bags with a "shoe tunnel" or separate dirty laundry compartment, like the for gym use. Market Segmentation 50–70L for week-long travel