From the Pro collection by Nike, this sports bra features:

• classic stripes
• Dri-FIT jersey to help keep you stay comfortably dry
• compression fit that provides medium support for training activities
• internal straps that add tension for stability, helping to control bounce from multi-directional movement
• racerback design that allows your arms to move freely
• pull-on construction
• polyester/spandex
• machine wash