Shell - 100% PolyMicro Microfiber Polyester, Lining - 100% Coolmax Crepe Ultra Lightweight Shell fabric for this run short will not only keep you dry but will keep you comfortable during your hardest runs Split to Waistband - The full split in the short allows for complete freedom in your stride 1" Inseam Moisture Wicking, Quick Drying Drawstring Key Pocket Made in the USA