The Women’s Wisp Vest from Rab is the highly ventilated, super lightweight technical tee ideal for layering over a sports bra during humid, fast-paced summer hikes. The recycled soft-touch polyester fabric uses a combination of densely woven and open knit sections for a semi-opaque style and cool, consistent airflow. In addition to offset low-bulk seams for extra strength and comfort when carrying a pack, the Wisp Vest features a flattering racer-cut back for unrestricted freedom of movement, plus a Polygiene anti-odour treatment for reliable long-term freshness.