I was amazed at this product and its versatility. It serves as a base layer for colder days under another 1/4" zip and a cool layer if the weather is a bit breezy but might warm up later in the day. You won't have to worry about stuffing a huge layer in your bag with this hoodie, it slides seamlessly into my Ledgestone B series Grip bag. Do yourself a favor and pick up this hoodie!