Backpacks with a hydrator

Hydrator included

— the presence of a hydrator (drinking system) included in the delivery of the backpack.

The hydrator itself is designed to be drunk on the go; for more on this, see "conclusion of the drinking system". Here also note that such equipment eliminates the hassle of finding a compatible drinking system, moreover, a ready-made kit is often cheaper than separately purchased backpack and hydrator. However, before buying, it is highly desirable to check the characteristics of the complete hydrator and make sure that it meets your requirements.