I used to travel a lot with my drums without any cases. Just threw them in the truck and unloaded when I got to the gig. Wow, I didn't know what I was missing. The cases make it so much easier to travel with your drums. Each case has its own strap, so you can easily sling it over a shoulder. This will turn 4 trips from the truck into 1 or 2.
These are also great cases for storing your drums. They are nice cases, so they will protect your drums over time if you need to stash them.
I got these for my Yamaha stage custom standard 5-piece. This case fits the following sizes:
-14" snare
-12",13",and 16" toms
-22" bass drum