This is my just For Preemies - Premature Baby 4 Ply Garter Stitch Bumper Boots knitting pattern. They are called "bumper" booties because the edging at the bottom reminds me of the fairground bumper cars. These fabulous booties are really quick and easy to make. The knitting pattern provides full instructions for 5 premature sizes XS (1-2lb), S (2-3lb), M (3-4lb), L (4-5lb) and XL (5-6lb) including numerous step by step photos to help you along the way. They are worked flat in any 4 ply yarn of your choice on 2.25 mm needles.