Osprey Packs Syncro 15 Hydration Pack The j-sip gives access to a front panel organizational compartment which features mesh pockets for tubes and tools, pump Holder, and key clip A zippered top slash pocket lined with scratch free, heat embossed fabric proves ideal storage for Optics and electronic devices The integrated, removable high visibility rain cover provides pack Protection in adverse conditions Osprey's lid lock easily and securely carries bicycle helmets The blinker light attachment found near the base of the front panel of the pack allows for Quick light attachment for high visibility in the dark