Free shipping over is valid in the US lower 48 states only, and is not available for PO Boxes or Military APO/FPO addresses.
This is a great product to add to your UD pack. 50oz is the perfect size to supplement the body bottles up front. I can keep tailwind, nuun, etc in the body bottles and sip on the bladder full of water too. Super versatile, easy to clean, easy to fill, and a great construction! It's even got "Ultimate Direction" printed on it. Baker McCool on Dec 12th 2016
I love my UD reservoirs! They are easy to clean and dry; I flip them inside out. I've never had one pop on me, and I use them regularly. Other brands have leaked -- UD never has!
I love that they come in different sizes for different sized packs and for longer or shorter excursions. The 50 is the one I use most often. Unknown on May 20th 2016