Ergodyne 13057 Chill-Its 5050B Bladder Replacement, 2 L, Blue, Ships in 1-3 Business Days
$23.58
The Chill-Its 5050B Two-Liter Replacement Bladder is compatible with the 5155 Hydration Pack (sold separately). The bladder features a DualCap for easy no-spill filling with water or ice, plus an insulated tube to keep water cool in the heat.