Medium (4) / Worsted / Aran / 10ply Yarn Crochet Projects
Medium yarn is the ideal yarn for fall crochet and winter projects! It's great for beanies and scarves and since it works up more quickly than Light (3)/DK yarn, super popular with sweater and cardigan projects!
Medium weight yarn is a category 4 yarn and is also called worsted yarn in the US, aran yarn in the UK and 10ply yarn in Australia and New Zealand.