Youmei Lightweight Trail Running Backpack Unisex Outdoor Racing Hiking Mountaineering Vest Pack

Lightweight design optimized for mid-to-short distance trail racing, minimizing every gram to enhance pace

Full-surface breathable mesh with honeycomb structure for efficient moisture absorption and quick drying, preventing cold and dampness

Ergonomic cut with rounded sleeve edges to prevent chafing and ensure comfort

Multi-functional, scientifically zoned compartments for balanced weight distribution and sustained running without feeling heavy

Three-level chest circumference adjustment suitable for different body types, allowing lung expansion even under high-pressure breathing

Multiple accessible pockets including water bottle holder (fits 500ml bottle), supply compartments for energy bars, salt tablets, energy gels, headphones, keys, and first aid equipment

Rear inner and main compartments for phone, valuables, waterproof jacket, full-finger gloves, and portable towel

Four-way high-visibility reflective strips on chest, back, left and right sides for safety in low-light conditions

High-decibel survival whistle included for emergency situations

Designed with ergonomic pressure balance distribution to maintain comfort and stability during runs

[1] Data sourced from YOU MEI laboratory measurements.

[2] Weight comparison data sourced from YOU MEI laboratory, showing approximately 50% lighter compared to a 210g phone.