I should start with the fact that I like the Pro-Tec Double Trumpet Case without wheels. But carrying two trumpets with other stuff attached to the bag (mute bag) is a little much.The case has pretty sturdy construction and a lot of pads that are trumpet length and can easily be moved for your best design of how they should fit. It also includes several (plenty) of little foam blocks to prop up the horns and keep them from butting against the lid when closed. It includes a velcro pocket for 2 mouthpieces. The front has a pouch for music that will fit the slim music folders that hold 8.5" X 11" pages of music, not the bigger folders. It is orientated so that the top of the pouch aligns with the short edge of the case, instead of the long edge. This is a big improvement over the non-wheeled version, and allows for much more storage. It also includes the famous Pro-Tec organizer for pens, pencils, business cards, etc..The wheels and pull handle are awesome, probably a little less than the Gard versions, but plenty sturdy and strong. I have had NO issues wheeling it over parking lots and hallways. It includes a shoulder strap, however, I won't be putting this thing on my shoulder any time soon. The zippers and velcro fasteners work just like the other Pro-Tec cases and the cord handles are good. It also features rings for you to fasten other items like a mute bag.It is not a huge bag, the non-wheeled version is flyable without checking it, but the wheels may make it too big for overhead storage on a plane. I would NOT check this bag when flying. Two trumpets fit perfectly and will probably not hold a tall cornet. Cornets with a small wrap may fit, but not if they are taller than a trumpet. It would probably hold a flugelhorn on its side, but not in combination with another instrument.This is not meant to be a hard case, therefore it is not as heavy as a traditional double case (ie: Bach), but that is probably why you are considering it in the first place. The wheels and pull handle make it a little heavy to put on your shoulder.If you are looking for a wheelie bag to carry two trumpets or one trumpet and a bunch of mutes, stand, mute holder, etc.., this is a great bag for it.