What Our Gearhead(R) Experts Are Saying:"I used this on a couple of faster training days where I wanted something lightweight but still supportive. The zip front is nice for adjusting mid-run, and the fabric keeps things feeling dry even once the pace picks up."When the pace quickens and every detail matters, we reach for layers that stay out of the way while still delivering support, and the On Zero Crop is built for exactly that. Whether we're lining up for race day or pushing through interval sessions, it keeps us moving comfortably without distraction. The lightweight fabric is designed to wick moisture and dry quickly, helping maintain comfort as effort builds. A double-layer front with a zip closure adds adjustable support and versatility, while the close fit keeps everything secure during movement. Around back, a mesh insert increases airflow to prevent overheating, making it well-suited for warm conditions. It can be worn on its own or layered over a sports bra, depending on the level of support needed.