Ultra-light construction: Weighing only 153 g, this triangle frame bag provides lightweight, efficient storage for riders who want quick access on the go. Water-resistant protection: Made from waterproof leather, it shields contents from moisture during rides in variable weather. Triple-strap stability: Secure 3-strap system attaches directly to the bike frame tube, minimizing movement even on rough trails. Comfort-focused design: Slim profile prevents leg contact and reduces aerodynamic drag for faster, more efficient riding. Practical and versatile: Keeps essentials dry and within easy reach; compact form leaves room for other gear. Material and size: Waterproof leather; compact triangle shape; ultra-light 153 g. Compatibility: Designed to fit standard frame tubes on most road and mountain bikes using the 3-strap mounting method. Use scenarios: - Daily commute in variable weather: store phone, keys, and small tools securely. - Weekend rides and training: carry a spare tube, patch kit, multitool, and snacks within easy reach. - Mountain biking or fast-paced trails: secure storage with minimal movement and drag while you focus on performance.