New padded VERTICAL SYSTEM has been designed to provide improved air circulation in a lighter-weight package. Its simple shape provides excellent ventilation. The channel placed centrally between the two padded vertical cells creates an air space between the back and the pack through which air can circulate unimpeded. Shaped, padded and adjustable shoulder straps, sliding chest strap with whistle. Practical and extendible, for a bigger capacity. Frontal pocket with zip for personal objects, frontal pocket with fast closure, practical pockets on waist belt and 2 lateral water bottle pockets. It has rain cover in the base and side compression straps.