OPTIMAL LIGHTWEIGHT PERFORMANCE. Women’s Nike Breathe Running Top helps keep you dry, cool and comfortable with super-lightweight Nike Breathe fabric. Its mesh back and short-sleeve design help you hit your stride in flattering coverage. Nike Breathe fabric helps you stay dry and cool. Mesh back panel enhances breathability. Raglan sleeves allow for freedom of movement. Crew-neck design offers an unrestricted fit. Stepped hem is longer in back for extended coverage. Body length sits at hips for optimal coverage that moves with you.