3D Vent Mesh: Engineered to maximize airflow and comfort throughout your run Secure Phone Pocket: Keep your phone close and accessible with a dedicated storage compartment Dual Adjustable Chest Straps: Customize your fit for all-day comfort and stability Fuel and Gear Storage: Carry nutrition, layers, and essentials without slowing down Trekking Pole Attachment: Adapt to changing terrain with easy-access pole storage