A "28-inch" duffel bag is considered a large, checked-size piece of luggage, typically measuring around 28" L x 14" W x 14" H. These bags generally have a capacity of roughly 85 to 95 liters, making them spacious enough for a one-to-two-week trip or for carrying bulky sports equipment like ski gear or camping supplies. Because of their size, they cannot be used as carry-on luggage and must be checked at the airport. When fully packed, a 28-inch duffel can easily exceed 50 pounds (23 kg), which is the standard weight limit for most airlines before "oversized" or "overweight" fees are applied. It is important to note that because duffels have soft sides, their dimensions can "bulge" if overstuffed, which might lead to them being categorized as oversized if they exceed the 62 linear inch (L+W+H) limit. Many modern 28-inch duffels come equipped with wheels and a telescoping handle to make navigating the terminal easier, as carrying a bag of this volume by hand can be quite a physical challenge.