Today only, as one of its Gold Box Deals of the Day, Amazon offers a selection of CamelBak bottles and packs at up to 50% off starting at $8.50. You’ll score free shipping with a Prime membership or in orders over $25. The sale includes everything from bottles for light workouts to heavy duty packs to keep you hydrated through even the most intense activities. Reviews are very solid overall, with just about all of the items receiving 4+ star ratings. Head below to see our top picks.