Sweaty Betty - On Your Marks 4" Running Shorts. Color Purple Light Speed Print. Low Stock. On sale for $61.62. MSRP $78.00.. 4.2 out of 5 stars3 left in stockBrand NameSweaty BettyProduct NameOn Your Marks 4" Running ShortsColorPurple Light Speed PrintPrice$61.62MSRP: $78.00