Rener Gracie’s first invention is Hero Hoodie. It is using Rener’s patent called “QuickFlip technology” which will turn your hoodie into a backpack.
The main reasons for this patent and Rener’s invention of Hero Hoodie is the fact that carrying your hoodie around once you’re not wearing it cause you a lot of problems. The most efficient ways till now were to carry your sweatshirt on your waist, over your shoulder or in your hand. All of those ways were problematic as hoodie would be loose and would fall off when you move.
Rener Gracie was thinking a lot about it and came up with the best way to carry an unworn sweatshirt. He invented a patent and technology that really solve a lot of problems we all expirienced.
All you have to do is to flip your sweatshirt upside down. And in few seconds the entire hoodie goes into it self creating a fully functional backpack.
According to bjj-world.com