When searching for a new gym bag, you probably look for something sturdy, roomy, and—most importantly—durable.

The last thing you want to do is buy a new bag only to find a hole ripped through the bottom a month later. From self-cleaning gym bags to the classic duffel, there’s no limit to the options available. But if you’re looking for something that’s going to last you through wind, rain, sharp keys, or getting stuck on sharp objects, you’ll have to look for something outside the box.

This ingenious bag might just be the last one you ever buy. It's called the Wolverine Pack, and San Francisco-based Slughaus designed it to be your go-to, from the office to the gym to the trails. The bag takes its namesake from the self-healing comic book character for a reason. If punctured, simply rub the fabric, and the heat from your hands helps bind it back together. (Can your other bags do that?)

Better yet, the bag is resistant to water and it's lightweight, so you can bring it on any outdoor adventure without worrying about it weighing you down. When unpacked, the Wolverine Pack rolls down into the size of an iPhone, which makes it especially easy to bring along for extra storage. The design features a handle at the top, but it also comes with a detachable strap so you can wear it across your back and go hands-free.

The sleek and simple design is ideal for everyday use as a gym bag or as a day pack on your next great adventure. And the rolling top design means it can expand or shrink to be exactly the size you need. It currently goes for $59 right now on Kickstarter.