Now even lighter and more comfortable, the Camelbak CIRCUIT RUN VEST is a highly successful running vest.With a unique ergonomic design that allows it to be used in a wide variety of activities, this model benefits from highly adjustable lateral compression that ensures a precise fit to keep the pack close to the back no matter how hard you work. In addition, a double sternum strap adjustment system is added. This breathable running bag, with its new 3D Micro Mesh, allows athletes to run with agility and stay hydrated, as it includes a 1.5L CRUX water bladder that provides 20% more water per breath.In addition to reflective elements, this model features a secure zippered pocket with a capacity of 3.5L that fits most smartphones, while the open pockets on the front harness are specifically designed for Quick Stow flasks for extra hydration.Features:- 3D Micro Mesh: multidirectional airflow and cushioning to maximize comfort and breathability- Secure mobile phone pocket: conveniently located with a transparent closure for quick and secure access- Tube trap: keeps your drinking tube secure and easily accessible- Two adjustable sternum straps: offer a wide range of adjustments for a custom fit and increased stability- Snack and gear storage: Organize your running essentials with pockets specifically designed for Quick Stow bottles- Reflective materials: for early morning or late night outings- Ultralight materials: unmatched breathability, comfort and durabilitySpecifications:- Material: Recycled N70D Ripstop with C0 DWR- Volume: 7L- Dimensions: 36x28 x 4.5 cm