You’ve seen it everywhere—on the arm of a fashion editor dashing through a terminal, slung casually over the shoulder of a friend at brunch, or perhaps even sitting pretty in your own closet. The Louis Vuitton Speedy is, without question, one of the most iconic handbags ever created. But if you’ve ever tried to buy one, you know the first question isn’t “which color?” or “which leather?”—it’s “which size?” With options ranging from a tiny nano to a weekend-ready carryall, the sizing can feel like a secret code only insiders understand. Let’s crack that code together so you can pick the Speedy that truly fits your life.

The Speedy Family Tree: A Quick Backstory

Before we dive into the numbers, it helps to understand where the Speedy came from. Originally introduced in 1930 as the “Express” (a nod to the speed of modern travel), the bag was designed to be a compact, go-anywhere suitcase. It was renamed the Speedy in the 1960s, and Audrey Hepburn famously requested a smaller version, which led to the birth of the Speedy 25. Today, the bag is available in the classic Monogram canvas, Damier Ébène, Damier Azur, and various leather iterations like the Empreinte and the soft, slouchy Speedy Bandoulière. The core sizes are measured in centimeters—and that number refers to the length of the bag’s base. Here’s what each one actually means for you.

The Tiny Titans: Speedy 20 and Speedy 25

Let’s start with the smallest members of the family. The Speedy 20 is the newest addition, introduced in 2022, and it’s essentially the modern answer to the mini-bag trend. It measures 20 cm across the base (about 7.9 inches) and comes exclusively with a detachable strap, making it a crossbody or shoulder bag. This size is perfect for the essentials: your phone, a card holder, a lipstick, and maybe a set of keys. It won’t fit a large wallet or a tablet, but that’s not its job. If you’re someone who loves a compact silhouette and wants to go hands-free, the Speedy 20 is your sweet spot.

Next up is the Speedy 25, the size that started it all. At 25 cm (9.8 inches), it’s the classic “Audrey Hepburn” size. It’s small enough to feel chic and manageable, but big enough to hold a small wallet, sunglasses case, a phone, and a few daily essentials. The Speedy 25 is often available without a strap (the classic hand-held version) or with a strap (the Bandoulière model). If you’re new to the Speedy line, this is the size most people start with. It’s the Goldilocks of the bunch—not too big, not too small, just right for everyday errands, a lunch date, or a night out when you don’t want to carry the kitchen sink.

The Everyday Hero: Speedy 30

Move up to the Speedy 30, and you’ve entered the sweet spot for daily carry. At 30 cm (11.8 inches), this size is roomy enough for a tablet, a larger wallet, a water bottle, and even a light sweater or a small umbrella. It’s the bag you grab when you know you’ll be out all day and need to carry more than just the bare minimum. The Speedy 30 is also a favorite among moms who need to stash a diaper or two, or professionals who commute with a small laptop (think 11-inch models). It’s still compact enough to feel like a handbag rather than a duffel, but it offers that extra breathing room. If you tend to overpack your bag “just in case,” the 30 is your reliable companion.

The Weekend Warrior: Speedy 35

The Speedy 35 (13.8 inches) starts to push into travel territory. This size is ideal for a weekend getaway or as a work bag if you carry a 13-inch laptop. It’s noticeably larger than the 30, and the base is wide enough that it can stand up on its own when packed. You can easily fit a change of clothes, a toiletry bag, a book, and your everyday essentials. However, keep in mind that the Speedy 35 can get heavy when fully loaded, especially if you’re carrying it by the top handles. The Bandoulière version with a wider strap helps distribute the weight. If you’re someone who likes to be prepared for anything—from a day at the office to an impromptu sleepover—this size gives you that flexibility without looking like you’re moving out.

The Travel Companion: Speedy 40

At the top of the classic size chart is the Speedy 40, measuring 15.7 inches across. This is a true travel bag. Think of it as a stylish carry-on or a gym bag that happens to be a Louis Vuitton. It can hold a change of shoes, a jacket, a laptop, and enough clothes for a short trip. But here’s the trade-off: it’s big. Really big. Unless you’re tall or enjoy carrying a substantial bag, the 40 can feel overwhelming for daily use. It’s best suited for people who regularly travel by car or train and want a bag that doubles as a chic weekender. The 40 is also a popular choice for those who use it as a diaper bag or a catch-all for family outings. Just be prepared for the weight—empty, the Monogram canvas version is light, but filled up, it’s a workout.

Beyond the Numbers: The Bandoulière Factor

You’ll notice that many Speedy sizes come in two configurations: the classic hand-held version (with two short top handles) and the Bandoulière version (which adds a long, detachable strap). The Bandoulière models are often slightly more expensive, but they offer versatility. You can carry it by the handles for a polished look, or sling it crossbody for hands-free convenience. If you’re choosing between the two, ask yourself: will I actually use the strap? If you’re someone who likes to keep their hands free for coffee, phones, or holding a child’s hand, the Bandoulière is worth the extra investment. If you prefer the classic, structured silhouette of the hand-held version, stick with the original. Also note that the Speedy 20 and the newer Speedy Nano (a tiny 16 cm version that’s more of a charm than a bag) only come with straps.

Material Matters: How Leather and Canvas Affect Your Choice

Size isn’t the only variable. The material also changes how the bag behaves. The classic Monogram or Damier canvas Speedy is lightweight and structured, so it holds its shape well. The Empreinte leather version is softer and slouchier, which means it can look a bit more casual and will slouch over time. If you’re choosing a larger size like the 35 or 40, the leather version can feel heavier, so canvas might be a better bet for everyday comfort. For the smaller sizes (20 or 25), leather adds a touch of luxury without becoming a burden. Also, keep in mind that the Speedy in leather often has a slightly different shape—the base may be less rigid, so it won’t stand up as neatly when empty.

Practical Tips for Choosing Your Perfect Speedy

Now that you know the sizes, how do you decide? Start by thinking about your daily routine. If you’re a minimalist who carries only a phone, keys, and a card case, the Speedy 20 or 25 is your match. If you’re a commuter who needs to bring a tablet, lunch, and a sweater, the 30 is the workhorse. For travelers or parents with young kids, the 35 or 40 can be a lifesaver. And always try the bag on in person if you can. The Speedy’s shape looks different on different body types—a 25 might look perfectly proportional on one person but tiny on another. Drape it over your arm, try the strap at its longest setting, and see how it feels when you walk.

Another pro tip: consider the bag’s opening. The Speedy has a single zippered top opening, which can be a bit narrow on the smaller sizes. If you plan to dig around for items frequently, a larger size (30 or above) makes access easier. Also, think about what you’ll store inside. The Speedy doesn’t have interior pockets (though you can buy an organizer insert), so smaller items can get lost in a larger bag. If you’re a “dump everything in” person, the 25 or 30 is more manageable than the 40.

Finally, don’t overlook the resale value. The Speedy holds its value remarkably well, but certain sizes are more sought after than others. The Speedy 25 and 30 in classic canvas are perennial favorites and tend to sell quickly on the pre-owned market. Limited edition sizes like the 20 are newer, so their long-term value is still being established. If you’re buying as an investment, stick with the tried-and-true sizes.

Whether you’re drawn to the pint-sized charm of the 20 or the spacious utility of the 40, the Speedy is a bag that adapts to your life, not the other way around. Take your time, try on a few sizes, and think about how you actually live. The right Speedy isn’t just a bag—it’s a companion for years of commutes, getaways, and everyday moments. And once you find your size, you’ll wonder how you ever got along without it.