Mountain adventures call for the Mountain Vest 4.0 for storage, features & lightweight (Weight Without Bottles: 8.99 oz. / 255 g) Abundant Storage: 11 total pockets - Front Stretch Mesh storage holds phone, fuel and valuables (13.27L total storage) New Comfort Cinch technology provides a custom fit with easy on-the-go adjustment Sliding rail sternum and waist straps Redesigned trekking pole holder