THE 365 POCKET T-SHIRT IS ULTRA SOFT AND MADE FROM 100% ORGANIC COTTON. THIS T-SHIRT IS DESIGNED TO BE WORN YEAR-ROUND. LAYER IT UNDER A HOODIE, SWEATSHIRT OR CARDIGAN OR WEAR IT ON ITS OWN IN WARMER TEMPERATURES. THIS T-SHIRT IS TREATED WITH NATURAL, PLANT-BASED PEPPERMINT OIL (PPRMINT™) FOR ITS ANTI-ODOR PROPERTIES.