The Kids Vintage Red Arrow Highway T-Shirt. Celebrate your weekend retreat destination with this original Mi Coast design. Inspired by the small Red Arrow HWY signs that dapple US 12. Red Arrow HWY is an original trademark design only offered at Mi Coast Brand. Extremely soft 3.8oz. Triblend 50/25/25 polyester/airlume combed and ringspun cotton/rayon, 40 singles. Coverstitched collar. Side seams. Size Small is equal to a 6-8. Medium is equal to a 10-12. Large is equal to a 14-16.