How Can Brands Choose Fabric Weight for Year-Round Workout Sweatshirts?

Year-round sweatshirt weight depends on climate, activity, and layering expectations.

Fabric weight alone does not establish warmth, breathability, wind resistance, or durability. Structure, finish, layering, and garment design all contribute, so compare production-intended materials against the relevant use conditions and define the evidence required before making specific performance claims about the finished product. Compare complete constructions rather than GSM alone.