Keep him warm on the ski slopes, in the woods, or even just out playing in the snow with the kids with this comfy, knit ski mask. This Bev Dillon design is an easy skill level knit project using bulky or worsted weight yarn and sizes 8 (5.00 mm) and 10 1/2 (6.50 mm) straight knitting needles. Also needed is a size G (4 mm) crochet hook to work a finishing edge of slip stitches around the opening for the face. Approximate Design Sizes: Small 16 1/2", Medium 18", and Large 19 1/2". Original Publication: Leisure Arts Leaflet #131 - Caps, Hats, and Helmets to Knit & Crochet.