Reebok Elements Marble Legging Women's Training Tights in Medium Grey Heather To Take On Your Day. Make today count in these leggings. Stride out in comfort and class, thanks to the stay-put wide waistband construction. The slim-cut profile keeps up with whatever moves you throw at it. 75% Cotton / 18% Polyester / 7% Elastane, mélange single jersey fabric is soft and stretchy. Slim Fit - wears close to the body and moves with you during exercise. Wide waistband for stay-put comfort. Marbled mélange texture. Color: Medium Grey Heather.