THIS SHIRT IS MADE FROM A SPECIALLY FORMULATED NYLON THAT HAS THE ABILITY TO BIODEGRADE IN A SHORTER SPACE OF TIME WHEN DISPOSED OF IN OXYGEN-POOR ENVIRONMENTS. IT HAS A UNIQUE STITCH PERFORATION FOR BREATHABILITY AND IS TREATED WITH BIOWICK®, A PLANT-BASED TREATMENT THAT ABSORBS UNWANTED SWEAT AND PEPPERMINT OIL (PPRMINT™) FOR ITS ANTI-ODOR PROPERTIES.