A thicker yet breathable running top for cooler season runs and workouts. The Fly-By's semi-fitted design is great for layering, as it's not too light or too heavy, and lets you move freely.
- DriLayer® Threshold thermal polyester adds warmth for cold-weather activities and wicks moisture to keep you dry and comfortable
- UPF 50+ fabric for sun protection
- Asymmetrical zip lets you increase venting when activity levels heat up
- Thumb loops hold sleeves in place when you pick up the intensity
- Semi-fitted design lets you wear it as an outer layer on cool days or as a mid-layer on cold days
