Fly Line Backing, Braided Polyester, Black & White 100yds 20 lb Test LN403 Combined Shipping: We combine shipping. To combine shipping simply add each item from our store using the ADD TO CART button located next to item price. When you are ready to pay, click on CART link at top of page and continue to checkout for payment. Shipping will be automatically combined in checkout. Shipping amount will be calculated by taking the highest shipping amount for any one item and all other items will ship at no additional charge.