Ran. Inc via Amazon offers its Ran 2-Liter Hydration Bag in Black for $19.99. Coupon code "UTDFQCFW" cuts the price to $13.99. With free shipping for Prime members, that's $6 off, tied with our mention from two weeks ago, and the lowest price we could find. It has adjustable shoulder straps and an earphone hole. Deal ends February 28.

Note: It's expected to ship in two to three weeks.