This Santic Zorn Cycling sports backpack, weighing just the equivalent of 5 eggs, is expertly designed for outdoor enthusiasts. Equipped with a professional carrying system, it ensures comfort on long rides, while the honeycomb breathable back panel provides excellent ventilation. The water-repellent fabric and waterproof zippers offer double protection, making it reliable even in light rain. A built-in helmet storage cover saves space, and a fast-access hydration system allows you to stay hydrated on the move. High-visibility reflective strips enhance safety during night rides, and practical features like side mesh pockets and an integrated chest strap whistle make it an ideal choice for serious cyclists.