Nathan Pinnacle Breeze 4L Hydration Pack self care ReactX foam is engineered to

ReactX foam is engineered to reduce its carbon footprint by at least 43% in a pair of midsoles due to reduced manufacturing process energy compared to prior React foam

Speeds up recovery

Lower pockets are ideal for quick storage of small essentials

size 2 fits torso circumference at chest of 36"–46"

Nathan Pinnacle Breeze 4L Hydration Pack self care ReactX foam is engineered toThe Pinnacle Breeze features sternum slider cords and Quick Fit adjustment system, wrapped in lightweight mesh for unmatched comfort. It comes with two 14oz 420 ml Nathan Hydrapak flasks and six pockets, providing a perfect blend of support, airflow, and storage. HIGHLY BREATHABLE Single layer Mesh panels, shoulder straps, and back interior mesh provide maximum air flow for ultimate comfort. SECURE COMFORT Compression fit combined with sternum cord