The suit starts at the waist with a provisional cast on and is knitted down, including the boots. Then the stitches are picked up and the rest is knitted up. The sleeves are set in. It is an involved project but not too difficult. You end with the suit, the gloves, helmet, and back pack.
It takes close to two skeins of white. You can use any yarn of about the same size. The silver is used for the boots, gloves and helmet trim and uses less than one skein.