24-7 SERIES®MEN'S ECO TEC KNIT CAMP SHIRT ECO TEC KNIT CAMP SHIRT CONTAINS REPREVE® 100% POLYESTER MADE FROM RECYCLED PLASTIC BOTTLES AND PROVIDES QUALITY FEATURES LIKE NO PILL, NO-SNAG DURABILITY, 4-WAY STRETCH, ANTI-MICROBIAL, AND MOISTURE-WICKING ABILITIES AND PROVIDES 30 UV PROTECTION.