Solids: 92/8 Recycled Polyester/Spandex Interlock. Heathers: 46/46/8 Polyester/Recycled Polyester/Spandex Interlock. Stretch interlock solid and heather color block. 1/4 zip mock neck. Set-in, hemmed sleeve. Side vents. MADE FROM 8 RECYCLED WATER BOTTLES!