KAILAS AIR 5L Trail Running Vest Hydration Pack Lightweight with Two TPU Water Bladders for Men Women Cycling Hiking, Medium, White

90% highly breathable mesh fabric for ventilation and wide shoulder straps for comfort; Advisable Use: trail running training and racing, road running, and marathon.
ADF (All-round Dial Have compatibility) adjustment system that includes a dial, a lace and fixed lace guides provides quick, all-round and precise adjustment. BI-FIX system prevents water within the water flasks from sloshing when they don’t seem to be enough full.
16 stretchy compartments: 2 chest pockets for 500ml water bottles, 1 chest pocket in your phone, 1 GPS device pocket, 2 side pockets, 5 lower chest pockets (1 with zipper for enormous phone), 5 rear pockets (1 with zipper and 1 for a 1.5L bladder)
3 how you can attach your trekking poles; Hidden trekking pole loops steer clear of being caught by tree branches; Reflective printings for night visibility.
Dimensions: 42x36cm (size M); Weight: 0.18kg (size M); 2 TPU 500ml water flasks included (every weighs 38g)；Rescue whistle included.