Knit and felt Delta for sizes XS (S, M, L, XL, XXL) with 9 (9, 10, 10, 12, 13) skeins of Cascade 220 Yarn (100% Peruvian Highland Merino Wool, 220yds/100g). Suggested needles are US 13 (9mm) Needles. You will need a zipper to fit, a belt buckle, 4 Buttons and 2 gadgets to make buttons into cufflinks. Skill level is intermediate.