You will need stitch holders. Finished measurements Chest circumference: 39( 42.5, 46.75, 50.5, 54.75, 58.25,62.5, 66.25, 71.25)" 99( 108, 119, 128, 139, 148, 159, 168, 181) cm Yarn used: Mode at Rowan Softest Alpaca Shade 013 Pebble - 10( 11, 12, 13, 15, 16, 17, 18, 19) balls