From the website: The “ORIGINAL” Pullover Button Up was invented by our Owner and Designer Lisa Bollin 5+ years ago after being so frustrated when getting her buttons hooked on the horn and popping her shirt open during a competition run. While designing this incredible shirt she made sure to add a longer back tail to stay tucked in, longer arm length for reaching, only using the highest quality stretch fabrics including our amazing Breathe cooling material for the hottest days of summer, ultra soft shimmer fabrics, soft stretch suede, butter-like feel of our jerseys, stretch satin, stretch lightweight denims and so many more. She has recently updated them all to have classic cuff details. The no-gapping front button placket has three functional buttons for easy on-and-off and six faux buttons that create the appearance of a classic button-down and so flattering you can wear them to the office or dress them up for that special occasion.