No optical illusion here. This visionary OGIO design features an edgy O pattern print on the sleeves. 3.8-ounce 100% double knit poly mesh with stay-cool wicking technology OGIO heat transfer label for tag-free comfort Self-fabric collar OGIO jacquard neck tape 3-snap placket with O debossed metal snaps Raglan open hem sleeves Woven OGIO badge on left sleeve