Car Seat Blankets Book- Keep Baby warm and comfy when on the move. It is easy with these quick-to-knit little blankets that are just right for car seats, strollers, swings and other carriers. All eight designs call for size 4 medium weight yarn and sizes 8, 9 or 10 knitting needles. All are easy or easy-plus skill level projects. 48 pages in a softcover.