Lululemon Get Set long sleeve spaced out space dye open back unknown sz (8/10?)

No size tag but this long sleeve running shirt is in great pre-loved condition with no rips, holes or stains. Measurement photos are in the list; however, approximate laid flat measurements are also as follows. Pit to pit: 21.5" Shoulder to bottom hem (front): 22.75" Shoulder seam to cuff: 17" Maybe a size 8 or 10 based on measurements. Please review your measurements.