S/S Sporty Concert Tee - I'm Not Your Mothermeet the s s sporty concert tee in im not your mother from MOTHER. im not your MOTHER. this vintage inspired concert tee features a crew neck, short sleeves, and a relaxed fit. made from a blend of recycled cotton, it comes in bright blue with white sleeves and bold navy block text across the front. made in los angeles utilizing fine imported materials style no. 81611 1079 INM 70% cotton, 30% recycled cotton model is 5'10" and wears size 26 or small