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® silver ion treatment for reliable long-term freshness.Details Fit: Regular Centre back length: (Size S): 63cm / 24.8 inches Weight: 87g/3oz Low bulk seams for strength and softness next to skin Feminine Cut main - Heather mesh stripe jersey/ 95% recycled polyester, 5% polyester/ Polygiene finish/ 145gsm