Looking for the perfect travel companion that adapts to your adventures, no matter how big or small? The MIER Duffel Backpack is here to revolutionize your travel experience. Available in three sizes—40L, 60L, and 90L—you can find the ideal fit for every journey. Got a trip planned? A gym session ahead? A spontaneous weekend getaway calling your name? This isn't just any bag—it's your new MVP for literally every adventure. Built tough to survive mud-slinging hikes, chaotic airport dashes, and even that one friend who “borrows” your gear and returns it looking like it fought a bear, the MIER Duffel laughs in the face of chaos. Choose your size (40L, 60L, or 90L) and let’s get started! The 40L size is perfectly suited as an airline carry-on, ensuring you keep your essentials close at hand without the hassle of checked luggage. For those longer trips lasting from 5 to 8 days, the 60L version serves as a reliable check-in luggage option, providing ample space for all your necessities while fitting comfortably in overhead compartments or under the seat. When planning an extended adventure or needing extra room for bulky sports gear, the spacious 90L model is designed for travels over a week, offering generous capacity for all your equipment. Backpack mode for hands-free convenience? Grab-and-go duffel style for tossing into your trunk? Done. The magic lies in its padded, stowable straps that disappear into side pockets when you're feeling minimalist. Switching modes takes no time at all. This bag is all about large capacity and straightforward space. No annoying dividers here—just one wide-open, roomy interior ready to accommodate your big sports gear, bulky clothes, or whatever else you need to pack.