GRVL = Gravel. A hydration vest designed primarily for trail running. Thanks to its flexible front fastening, the pack stays securely in place without restricting breathing. This model is compatible with the Salomon Custom Quiver pole carrying pouch. - Compartments: - 1 back compartment, 1 zippered front pocket, 2 stretch front pockets - Key features: - Compatible with a 1.5-liter hydration bladder (sold separately) - Precision Fit / SensiFit design for enhanced comfort and freedom of movement - Quick Link adjustment allows the chest strap to flex with your breathing - 3D Airmesh shoulder straps improve breathability during intense activity - Total capacity: 4 liters - Stretch key holder allows use without detaching keys - Sizing (based on chest circumference): - XS: 81.589 cm - S: 88.596 cm - M: 95.5102.5 cm - L: 101.5108.5 cm - XL: 108115 cm Want to know how much fits in different backpack sizes? [Check our guide](https://scandinavianoutdoor.fi/elamaa-