- Material: Cotton Introducing The Trefoil Tee Regular, A Woman'S Graphic Tee That Pays Homage To Adidas' Rich Heritage. This Regular Fit Tee Is Composed Of A Sustainable Material Blend Of 94% Better Cotton And 6% Elastane. The Adicolor Collection Celebrates The Power And Authenticity Of Adidas' Dna, Bringing In Subtle Touches From The Past And Remastering Them For The Present. This Tee Is A Testament To Our Roots, Offering A Modern Yet Authentic Attitude With Its Vibrant Colours.