Carry gear in an easy-to-reach place that minimizes wind-resistance and won"t get in the way of knees, feet, or other gear. Great for tools, snacks, wallet, keys and other small items. Top zipper for quick-access, Velcro strap attachments, 420D nylon. Compatible with most bikes. Note: Please measure bike frames to ensure compatibility. (Also available in Large (IB-FB1-L). Check store for availability).