Conserve core temperatures in cold weather with these USMC FROG Undershirts. Each makes a light, easy-moving silkweight base layer for all of life's adventures. Designed to modern FROG (Flame Resistant) specifications, making them more resistant to sparks and sudden blasts of high heat. Great for peace-of-mind around the fire pit or ice house heater. FROG (Flame Resistant Organizational Gear) Silkweight base layer Quick-drying and moisture-wicking Antimicrobial for long-lasting freshness
