The Trellis Bag pattern is written in a “any yarn, any gauge, any size” kind of way. You can use whatever yarn you have, select matching knitting needles and start your project. The only crucial thing is to weigh your yarn to make sure you won´t run out at the end.

My bag was knit using a cotton with 115 meters per 50 grams, on a 4 mm knitting needle.