CamelBak StoAway Reservoir

If weight or size is a concern, buy the 70oz or less, the 100oz weighs in at 7.4 lbs. It’s big and takes up a lot of room. The bite valve is awkward to use but functional. The molded skin insulates and keeps the water cool depending on outside temps. You have to keep this unbottle clean or taste and mild dew becomes a consequence. Overall, it’s big, heavy, but stores a lot of water if refilling in the field is problematic. Just make sure your day pack can fit it. Quality is excellent 4.5 thumbs