A sweater pack is several knit pullovers or cardigans in one bundle, not a fleece hoodie three-pack. Lots may mix crewnecks, turtlenecks, and cardigans, sometimes as a mystery size run. Yarn kits that let you knit a sweater are a different product and belong with craft supplies. Fiber and whether every piece shares one size are the checks that stop a disappointing unboxing.
Read the piece count and size list on two packs, then skip hoodie fleece labeled sweater if you wanted actual knitwear.