Out of the box evaluation - Geigerrig Hydration Pack Engine Reservoir

I purchased the 2L model to provide 11 miles of water carry for mountain trail running on the AT during hot summer months.

I haven't use this product in the field yet (3 months hence), but I have run it through some preliminary, out of the box tests.

I did fill it up and insert it into my 2015 MountainSmith Day TLS lumbar pack (also purchased from Campsaver.com). I placed it vertically into the stretchy fabric compartment against the back, and the pack easily zips closed. The 2 hoses can exit either end of the pack due to the double zippers on the pack, so no pack exit hole modification was required. I also tried placing the bladder horizontally. The horizontal fit is snug, which is desirable to minimize movement of the bladder while running. Storage of other gear seems more convenient this way, also.

The stated dimensions of the bag shrink when filled with water, allowing it to fit horizontally and vertically within the 12"Vx10"H pack dimensions .

I don't expect any problems with water delivery due to orientation since the water is pressurized, not gravity fed, but having the water exit port of the bag in the lowest vertical position is standard procedure otherwise.

I see

This review was written in the old system and had content requirements that are different than reviews written today.