THIS TANK TOP IS MADE FROM 78% ORGANIC COTTON. 20% LYOCELL SEACELL™ AND 2% ELASTANE ROICA™. HARNESSING THE POWER OF NATURE'S REGENERATIVE RESOURCES. LYOCELL SEACELL™ USES EUCALYPTUS PULP AND SEAWEED POWDER TO CREATE A SUPER SOFT YET LIGHTWEIGHT MATERIAL THAT FITS CLOSE TO THE BODY.