Contents are held in place by a simple bungee cord closure, which is tightened with one hand between release and securely fastened. The Xtouring almighty cups are a must-have to any ultralight bikepacking system and are also great for every day riding and commuting. Designed to add easy-access storage space for frequently used items like water bottle, tools, arm warmers, snacks and so on. Constructed from high quality, waterproof materials and optimized for durability and weight. The self-locking system reduces bottle swinging to the minimum, while bungee cord opening keeps contents safe from the sun and secure from spilling.