Fabric: https://ripstopbytheroll.com/products/1-0-oz-monolite-ripstop-nylon-mesh
Sewing around a curve tutorial: https://www.youtube.com/watch?v=rRBc3M1Byww&t=134s
How I originally learned to sew a stuff sack: https://www.youtube.com/watch?v=CfYNEKoM7tw&t=788s