Vintage 1970s retro track shorts red white stripe athletic shorts small

Vintage 1970s retro track shorts red white stripe athletic shorts small These shorts are epic. Purchased from a vintage boutique, never worn myself. In great shape, especially given age. Sturdy construction with lots of life left. Material feels like a cotton/poly blend perhaps? Waist (elastic so stretches) 13” Rise 12.5” Inseam 2”