The camelbak antidote is more than just a revised omega reservoir the antidote is a premium performance system connecting you to the hydration you need seamlessly integrated into their specialized packs with quick connect enhancements and unparalleled stability the antidote is light low profile and perfectly equipped for any dose of adventureair light fill port the widest on the market so easy to holdquick snap cap only 15 turn from closed to open requiring very little effortlow profil