Train wherever you want with the GORUCK Rucker 4.0 rucksack training backpack. Designed specifically for rucking, it’s ideal for use on grass, dirt, and concrete. Helping you get stronger, it won’t fail on you when you need it most. Designed without interior zippers, it has all VELCRO closures on the internal pockets. Just use the huge pull tabs to open and close them. Furthermore, it has a comfortable design. When you do bear crawls, you’ll love its upgraded padding on the top of the plate pocket. Not only that, but ergonomic lumbar support also gives you the support you need. And the fabric on the back panel and underside of straps ensures you don’t get friction burns. Finally, the front panel has burly YKK Zippers and no slant pocket, minimizing the risk of failure.