Weighing only 190 grams, the Classic Light distills the essential features of a cycling hydration pack into a simple, streamlined package. The carefully chosen materials are made to last, without adding unnecessary weight. Total volume: 4 liters, of which the full hydration bag consumes 2. Camelbak is a true pioneer in hydration packs, and for many, the only brand worth considering. The two-liter Crux reservoir comes with a quick-connect hose and a bite valve with an easy-to-use shut-off valve. The Crux's twist cap is large enough for easy cleaning and filling. The reservoir also has a measurement scale to show the fill level. - Reflective details - Air Support Light back panel and ventilated shoulder straps - Elastic cord system allows you to carry, for example, a light cycling jacket on the front panel - Small pocket for phone and keys - Adjustable chest strap - Helmet holder - Attachment loop for a separate LED rear light - Internal holders for a pump and tools