What size needles for phentex slippers?

For knitting Phentex slippers, it's recommended to use size 6 (4 mm) or size 7 (4.5 mm) knitting needles. The exact size may vary depending on your tension and the specific pattern you are following. Always check the pattern instructions for any specific needle size recommendations. Using the right needle size will help achieve the desired fit and texture for your slippers.