Customize your climate with the Studio Half Zip. With long sleeves and a mock neck, this fitted pullover is exactly what you need for warm ups, cool downs and the stretches in between. Customize your climate with the Studio Half Zip. With long sleeves and a mock neck, this fitted pullover is exactly what you need for warm ups, cool downs and the stretches in between. Performance Stretch Knit. Half-Zip. BreatheInterlock is peachy to the touch, with smoothing coverage and an air brushed finish. Fits snug to the body. Hits at hip. Model is 5 inches8 inches / Size XS. Performance Stretch Knit. Half-Zip. BreatheInterlock is peachy to the touch, with smoothing coverage and an air brushed finish. Fits snug to the body. Hits at hip. Model is 5 inches8 inches / Size XS. Color: black