The Streamer hydration bladders, developed in collaboration between Deuter and Hydrapak, have always been a reliable choice. The handy slide-seal closure at the top ensures a tight seal, the materials are of excellent quality, and the bite valve is thoughtfully designed. In this version, the protective cap for the mouthpiece is improved: it wont yank the valve off the hose even if handled a bit carelessly. - Detachable hose - Compatible with water filters featuring 28 mm threads - Wide-opening mouth makes cleaning easy The product contains no PFAS compounds or BPA.