—01. Indigo denim fabric.
—02. Sakura pattern.
That sakura indigo pattern seems to be making its way around New York in the past couple of seasons, but I don't mind, its great. I've been hunting for it myself, but haven't been able to find the supplier since seeing The Hillside, FSC and Wayne Pate use it. J.Crew have found the swatch card however and made some neat little pocket squares. Both indigo dyed fabrics look great and would be a nice accent to pretty much any cotton garment I'd wear.
Edit: Hillside also have made pocket squares using this fabric, this season, which are now available at Context.