Made all in one piece, only seams are for the sleeves but you can use dpn if you wish so no seams (I have arthritis in hands and have difficulty with dpn.) they now have shorter circular needles that you can use instead of dpn). made from top down so easy to adjust size. just add more increase rounds before sleeve divide to make a larger size. work more rounds after divide to add to length of sleeves and body. very easy, great for the new knitter