While we've established that classical guitars aren't particularly small, that's not to say they're all the same size, either. So when you set out to choose a gig bag for your classical guitar, the first thing to know is its size. That way, you can shop for a gig bag with a nice, snug fit - which will make it more effective at its job of defending the instrument from bumps and scratches. For example, there's the Musician's Gear 7/8 Size Acoustic Guitar Gig Bag for near-full-sized models, and the top-rated Road Runner Roadster Little Brat 3/4-Sized Guitar Gig Bag for the next size down.
You might also choose a gig bag just for its great looks! Check out the Kremona Dual Pocketed Double Reinforced Deluxe Classical Gig Bag for instance: its color and styling make it the perfect companion for a vintage instrument. Or maybe you're an accessory junkie interested in getting the highest volume of nooks and crannies for all your gear? In that case, the Road Runner Roadster Classical Guitar Gig Bag might be your best bet. It's loaded with roomy pockets - no wonder it's one of the best sellers in the whole category.
The only strict requirements a gig bag has to fulfill are being able to fit the instrument it's designed for, and having enough padding to keep that instrument well-protected. Beyond that, the details are up to the manufacturer, which has led to the impressive variety of styles you can see in this lineup of gig bags for classical guitars. Which one of those designs meets your needs is up to you to decide; as long as the gig bag you choose is the right size for your guitar, the rest is a matter of preference.