100% Polyester in a 160gsm micro mesh fabric JB's Dri moisture wicking fabric designed to help keep you cool and dry Complies with standard AS/NZS 4399:2017 for UPF Protection (UPF 50+) Complies with standards AS/NZS 1906.4:2010 and AS/NZS 4602.1:2011 Day Suitable for use in day Complies with Standard AS/NZS 4399:2017 for UPF Protection (UPF 50+) Complies with Standards AS/NZS 1906.4: 2010 and AS/NZS 4602.1: 2011 Day only JB's Wear HiVis Day and Night Reversible Vest 6D4RV