Lightweight design with a builtin hydration reservoir to support continuous hydration during cycling and hiking. Multifunctional storage space with organized compartments to meet different outdoor activity needs and keep essentials accessible. Suitable for cycling, mountaineering, and a variety of outdoor activities; designed for those who pursue efficient and portable equipment. Breathable design and ergonomic carry for comfortable use during extended wear; ideal for sport and fitness activities. Compact and easy to carry, providing practical hydration and storage without adding bulk. Use scenarios Cycling days or long rides: stay hydrated without stopping, while keeping essentials within reach in the storage compartments. Day hikes and mountaineering: carry water, snacks, and light gear in a streamlined pack that reduces fatigue and balances load. General outdoor activities or travel: a lightweight, breathable solution for hydration and quickaccess storage on the go.