From Mood Fabrics Sewciety:
"The end of summer brings with it some weird temperature changes. During the day, it might be sweltering, but as the sun drops, you might find yourself huddled next to the bonfire at a late night barbecue. For this season, transitional pieces will be your best friend. The Willow Cardigan can be made with a variety of fabrics to help you through late summer and into fall. This waffle knit is lightweight and nearly sheer, making it the perfect addition to your Pre-Fall wardrobe!"