Calvin Klein Large Jock strap Perfect pair of Jock strap for those that of you that are familiar with Calvin Klein Jock straps. You know they don’t disappoint. I myself love how cotton feels specially after a god cardio workout. They are 95% cotton and 5% Elastane. Let me know if you have any questions after all I am a man and can tell you how they fit. Feel free to make reasonable offers. cotton comfort, athletic underwear, sporty fit, elastic waistband, minimalist style, men's underwear, breathable fabric, casual athletic, snug fit, basic white