Try to find the Cool Wool yarn specified in the pattern. This yarn is perfect for where your grandson lives and it doesn't itch. Watch the turning row in the beginning of the pattern for the foldline. After you CO your stitches, start the first row of st st with a purl row. Your 8th row will be a k row. When you turn your work, the p side will be facing you, then you k this row for the foldline. I did not use a rolled neckline--didn't really think a rolled neckline was for a boy. About this yarn: it tends to stretch when you wash it, but it will retain its shape as it is dries. Since st st tends to curl in, I blocked the pieces first then put them together. I also tacked in the seams with embroidery thread (the colors match better than regular sewing thread).