Lululemon numetrex heartbeat tank

lululemon racerback running heartbeat tank. Sm logos on sides and 1 large logo on back. Writing on bottom inseam which is where the bar is. In pic. Has numetrex senors and pocket to help with monitoring heart. Thick seamless Lycra See measurements. No size dot in these only thing I could find was one bar stitch that may indicate size 4. Also measurements coincide with size chart to be a 4. Does have some stretch. One flaw inside small seam separation shown in pic- doesn’t effect the fit