ARENA USA swimming "USA" warm-up jacket - small

This is a warm up jacket from Arena. This is a USA Swimming sanctioned warm up from a few years back. Fully mesh lined so your skin doesn't stick when you're wet. There's a small spot of discoloration on the sleeve. Not noticeable but I've pictured it. No holes or tears. Please ask questions before buying. I'm happy to send more info, measurements other than pictures.