lululemon's Summer-Ready Button Up $44

This shirt may look like a dress shirt, but it performs like athletic wear. The lululemon Airing Easy Short-Sleeve Shirt is half off right now, dropping from $88 to $44 in two colors at lululemon. The WovenAir fabric is naturally breathable, four-way stretch, sweat-wicking, and quick-drying, so it holds up through whatever the day throws at it. This is the kind of shirt you reach for on the days when you need to look put-together but feel comfortable. Shipping is free. Heads up: this is a final sale item, so you'll need to log into a free lululemon account to return it for store credit only.