Mountain Warehouse Isotherm Warm Black Quarter Zip XXL Description Black Mountain Warehouse Isotherm quarter-zip performance top in size XXL. Lightweight, stretchy athletic fabric with heat-retaining Isotherm technology and a mock neck/half zip. Good for hiking, layering, cold-weather workouts, skiing, or everyday wear. Pre-owned condition. Please review photos for condition and any normal signs of wear. #MountainWarehouse #MensActivewear #QuarterZip #BaseLayer #HikingGear