Knit flat with bulky yarn in garter stitch – this hat will be finished in a jiffy. Size: adult or child Yarn: 1 skein of Morehouse Merino Bulky, and a about yard of Morehouse Merino 2-ply Needles:  single-pointed #10 1/2 or 11 and single-pointed #4, #5, or #6 Our Pico Hat is shown here in brown heather.