You Loved The Echo Tee, Echo Hoody, And Echo Headwear Pieces So Much We Decided To Throw In An Extra Way To Top Off Your Mountain Chasing Dreams: The Echo Tank. Built With The Same Up Sun Protection And Polygene Odor Control As The Rest Of The Collection, The Echo Tank Is The Latest Way To Show Off Those Boulder Or Paddler Shoulders In One Ultra-Lightweight, Superbly Breathable Training Top.