Color: Black Main compartment with drawstring flap that can be opened and closed even when worn / Original bottle that can be adjusted according to capacity / Zippered security pocket at the top left of the main body / Reservoir compartment / Stretch pocket with elastic spindles on shoulder harness / Stretch pockets on bottom left and right front / Spindle cord with whistle 2 Adjustable Height Chest Straps / Side Compression Straps / Reflective Logo Dimensions: XS/37*15*38.5cm, S/38*16*39cm, M/40*17*41cm, L/41.5*18.5*43.5cm (Length x Width x Width) Capacity; 10L/weight; XS/about 198g, S/about 198g, M/about 198g, L/about 200g