From Mono:

“Less is more. Unless you’re talking about gear. We all try to pare down our rig as much as possible for touring, but sometimes you just need… more. More cables. Effects. A hard drive. Maybe even a spare t-shirt or two. Thats why weve created Classic Tick Accessory Case 2.0 – to accommodate those extras. The beauty of it? Aside from the fact you wont be overstuffing your guitar cases, you wont have to bring extra carry-on. The Tick is designed to become one with your MONO case, counting as one piece of luggage too. Easy.“