If you’re new to bag making, foam interfacing might sound intimidating—but trust me, it’s a game changer. It’s the secret sauce to giving your bags that crisp, professional structure that helps them stand tall and keep their shape—even when they’re empty. I used @patternsbyannie’s Soft & Stable to make this handbag, and it’s hands-down my favorite foam to work with. It’s a lightweight, flexible foam sandwiched between two layers of soft fabric—easy to sew through, doesn’t bunch or wrinkle, and a