WLPS 3L low profile hydration system Coyote tube The WLPS was designed for ballistic vest integration. Maximum utilization of our low profile technology reduces the depth of the carrier making it a truly low profile hydration system.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }