Good condition. Size L. Active Warmth Insulation Vest. The newly adopted Prime Flex shell material is ideal for dynamic insulation products, offering excellent stretch, water repellency, and breathability. In synergy with the OCTA insulation used, it maintains moderate warmth while preventing overheating during activity. The vest's ability to easily regulate core body temperature, combined with the features of OCTA and Prime Flex, makes this a perfectly matched product.