The anaconda algorithm at your ready! If you need a tutorial, here's one of the kids' videos.
A classic sweatshirt with crew neck.
Pre-shrunk
1x1 athletic rib-knit collar with spandex
Air-jet spun yarn with a soft feel and reduced pilling
Double-needle stitched collar, shoulders, armholes, cuffs, and hem
Quarter-turned to avoid crease down the middle
