Vintage Mathematics scarf with handwritten Formulas Scarf By Di Capanni (Cream) 40% OFF!!! Handmade - Vintage old handwritten Mathematics math formulas Geek infinity scarf Produced in smoke and pet free environment. Gift for teacher, engineer, scientist, and students Length: approx. 80 cm / 31" (62" in circumference) - Width: approx. 35 cm / 14" Other colors and options also available in my store. See promotions I offer with this scarf