Vintage 1/4 zip sweater

[Lloyd]

Hello VFG community,

I’m recreating a vintage athletic sweater inspired by the 1940s-50s, and I’d love some guidance on the right GSM for an authentic medium-weight flat knit cotton. I’m aiming for that classic athletic style—slightly heavier and more durable, with a snug fit that was common in vintage sportswear.

Here are some specifics:

• Era: 1940s-50s, athletic style.
• Weight: Looking for a medium weight that’s substantial enough for durability but still breathable.
• Fiber: 100% cotton, flat knit.
• Purpose: Suitable for mild-to-cool weather, ideal for layering or wearing on its own as an active sweater.

From what I’ve read, a GSM between 220-300 might be the right range for that classic “athletic” weight, but I’m unsure if this aligns with actual vintage standards. Does anyone have experience with the typical GSM for 1940s-50s athletic-style knits or suggestions on getting the right texture and weight?

Thanks in advance—I really appreciate any insights!

 

[MagsRags]

I’m recreating a vintage athletic sweater inspired by the 1940s-50s

What a cool project! Am I correct in thinking that you will be buying knit fabric to sew, and adding the cuffs and collar? Or are you starting from scratch and knitting the whole thing?

 

[Lloyd]

What a cool project! Am I correct in thinking that you will be buying knit fabric to sew, and adding the cuffs and collar? Or are you starting from scratch and knitting the whole thing?

I won’t be making it myself since I don’t have the expertise, so I’ll be working with a manufacturer to bring it to life. Since I’ve never formally studied fashion or its history, I’m learning everything as I go. I currently believe the right GSM for the cotton should be between 300-320, as durability, drape, and breathability are key—especially since it’s an athletic sweater—but I’m still working to confirm if that’s the best choice.