M/L SIZING IS SOLD OUT! 3XL/XL: Reduced price! Super lightweight running LED singlet with CREE® 150 Lumen LED mounted at sternum level. Minimalist design features elastic straps in fluorescent yellow for road safety. Two buckle adjustment and open shoulder design provides improved overall comfort and maximum shoulder rotation. Full reflective strips and piping provide enhanced road safety. The perfect lightweight race vest for overnight racers and ultra runners, and an deal utility vest with easy fit over work gear for night-time worker safety. The Xtend comes in 2 universal sizes: M/L (for women’s size 2-10, men’s jacket size 36-42) and XL/3XL (for women’s size 12+, men’s jacket size 44-56).