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You've seen the specs: 20 liters, 25 liters, 40 liters. But what does that actually mean when you're stuffing a 15-inch laptop, a water bottle, and a rain shell into a bag that claims to hold it all? Too often, we buy based on how a bag looks, not how it carries. The result? A bulging backpack that digs into your shoulders, or an under-packed weekender that's too small for a weekend away.
We're taking a hard look at the size and capacity options from three of our most popular carry brands—Herschel Supply, LeSportsac, and Chrome Industries. Each brings a different philosophy to bag sizing, and one of them will likely match your daily load better than the others. We've pored over the specs, listened to what's actually said in the product descriptions, and thought about how these bags function in the real world. Let's find your perfect fit.
Before comparing brands, it helps to put a number to your needs. Think about the essential items you carry daily. A typical commuter kit—laptop, charger, lunch, water bottle, a few EDC odds and ends—usually lands in the 15–25 liter range. A dedicated work backpack for tech-heavy loads might push toward 25–35 liters. Need to carry gym clothes or a change of shoes? Add a few liters. For weekend getaways, a 30–50 liter duffel or weekender is often the sweet spot. Here's how the three brands stack up across the spectrum:
Chrome knows the city. Their bags are designed to withstand brutal weather and heavy loads. Their sizes range from compact slings like the Kadet (12L) to the front-loading Barrage Cargo Backpack (34L), and even roll-tops that expand up to 80L. If you're on a bike or facing unpredictable conditions, Chrome's sealed tarpaulin and welded construction are hard to beat. The Urban Ex series, with its roll-top design, is a favorite among waterproof-pack seekers. But remember: bigger isn't always better. A 34L pack can be a great commuter if you carry a lot, but it might overwhelm if you're only hauling a laptop and lunch.
One thing to note: Chrome's seatbelt-style buckles are iconic, and they're also a great way to quickly attach gear to the outside of your pack, effectively adding capacity without adding volume to the interior. The Holman frame bag, for instance, is ideal for riders who need to keep weight off their back.
LeSportsac is all about lightweight nylon and clever organization. Their weekender bags in Deluxe Medium, Large, and Extra Large (approx. 40L, 50L, and 70L respectively) are fantastic for trips where you don't want to check a bag. But the real stars are their crossbody and shoulder bags, which offer everyday utility in modest sizes. The Everyday Bag is a popular choice that holds a tablet, a wallet, and a light jacket, while the Pouch Crossbody is essentially a large, cushioned pouch for the truly minimal carry. What's great about LeSportsac is the rips-top nylon—it's durable yet so light that you can pack extra items without feeling the weight. But be realistic: a 12L crossbody is not going to fit a 15-inch laptop, so plan accordingly.
The Micro Weekender from the MSGM collection is deceptively named—it's a micro minx that actually fits a surprising amount (a small tablet, a wallet, a phone, and a snack, easily). But it's also designed to be clipped onto a bigger bag as a charm or pocket, showing LeSportsac's playful approach to capacity.
Herschel offers a wide range of backpacks, from the classic Retreat (25L) to the tech-forward Kaslo (approx. 20-25L) with its dedicated laptop compartment and hidden AirTag pocket—a thoughtful detail for tech-savvy travelers. Their heritage looks are iconic, but it's the internal organizationthat often wins people over. The Pop Quiz Hip Pack is a compact 1.5L that fits the modern essentials: a phone, a wallet, and keys. And for overnight trips, the Heritage Hardshell Carry-On (approx. 38L) is a rigid-shell option that protects gear while rolling through airports. Herschel's capacity labels are generally true, but the fit and finish can feel less rugged than Chrome's, so consider your priorities.
One tip: If you're between sizes, think about how you pack. Herschel bags are often photographed with a notebook and sweater, but they have more room than it appears. The Retreat is a great college pack, but if you're carrying a heavy engineering laptop, the Kaslo might be better suited with its suspension system.
There's no single best size—only the right size for you. From our breakdown:
Now that you've got a clearer sense of capacity, why not explore our collections? Check out the laptop bags and bike bags to see these options in person. If you're still unsure, drop us a line—we're happy to help you find the perfect fit.
All capacities are approximate and based on manufacturer specifications. Current date: August 11, 2026.