You can knit this in pretty much any size of needle really, the thicker the yarn the bigger the knitten but that’s pretty much it I imagine.

It’s in basic garter stitch, you’ll need to cast on, cast off, increase and decrease but that’s it. Oh and be able to sew bits together.

More links:
http://www.createlierdoetlekkerzelf.nl/uploads/1/3/1/8/13186607/knitten_patroon_kleur.jpg