Made for long distance treks. The ROCFLY concept builds on the highly successful ultra-trail shoe TRAILFLY and takes it into the world of long-distance trekking, speed hiking and fast movement in the mountains in general. Now also in a waterproof version with GTX membrane. Like the TRAILFLY, the ROCFLY is built on a massive G-FLY graphene foam midsole. Cushioning and comfort are undoubtedly the key and most desirable features of running and trekking shoes. With long-distance trekking footwear, this is doubly true, because as the miles increase, there's nothing like keeping your feet as comfortable as possible. But when moving in the field, in addition to comfort, you need maximum stability and the ability to read the terrain to avoid sprains or falls. That's why ROCLFY uses the patented ADAPTER FLEX technology - a 10mm deep notch in the middle part of the cushioning, which radically increases the flexibility of the entire shoe and thus its ability to feel the terrain. The 6 mm drop also plays an important role here, supporting the natural working of the foot. Another revolutionary innovation is the G-FLY cushioning foam. The world's first graphene damping material. Graphene is a Nobel Prize-winning material. 200 times stronger than steel, yet extremely flexible and extremely light. The combination of foam and graphene allowed us to achieve such high values for durability and energy return that not many other shoes can boast. It would be hard to find a better base for a shoe that aims to cover tens to hundreds of kilometres of varied terrain. The sole is based on the proven TERRA ULTRA concept. The basic shape of the plugs is very similar, but their distribution differs. Our goal was to maximize the flexibility of the entire shoe without sacrificing any of the high-end grip designed for all-purpose trail. The ROCFLY is not afraid of long traverses on asphalt and will hold you up even in rocky rubble or technical forest terrain. The main differences between TRAILFLY and ROCFLY can be found on the upper. Unlike TRAILFLY as a running shoe, ROCFLY can afford not to skimp on materials for weight and focus entirely on promoting stability and durability. The upper remains at the widest hoof Standard (width 5 out of 5 on our scale, with 5 being the widest possible fit), but instead of a lightweight fabric, it's made up of a highly durable textured knit. It breathes very well and dries quickly. In addition, it accurately and comfortably hugs the foot with almost indestructible durability enhanced by the massive cast and reinforcement around the laces. The result is a highly durable and well-fitting shoe in which you don't have to worry about going hundreds of kilometres into the wilderness, where any material failure is a fatal problem. The ROCFLY 350 version has a classic low fit and differs from the TRAILFLY running version primarily by its higher mechanical resistance and more stable foot anchorage. 50 grams is then a very low tax for such a significant shift in functional features that you will appreciate on the trek. Whether you're going on the Czech Trail, the SNP Heroes' Route, the Corsican GR20, or another more exotic trek... the ROCFLY 350 will be a great and reliable companion. Day after day, kilometer after kilometer.