92% polyester/8% elastane. Athletic sports shorts with Z-TECH® Stretch. Soft athletic 4 way stretch fabric. Extremely lightweight. Quick drying. Dual elastic waistband for comfort fit. Reflective Spiro logo center back position. Z-TECH® stretch logo on left thigh in reflective material. Keeps the skin cool and comfortable. Ideal layer garment, good warmth factor when worn as a layer.