Pellon FF78F1 One-Sided Fusible Flex-Foam Stabilizer 20" x 10 yards is the foam-based fusible stabilizer that gives bags, totes, and structured accessories a firm, professional-grade body with a padded, dimensional quality that no woven or non-woven interfacing can replicate — a single-sided fusible foam that bonds with a dry iron press and creates the crisp, structured walls that professional bag makers specifically seek.
Top 10 Questions About Pellon FF78F1 Fusible Flex-Foam
Q: What makes Flex-Foam different from fleece interfacings like 987F or 988?
A: FF78F1 is an actual foam — not fiber batting or fleece. The foam construction creates a firmer, more dimensional body with more structural integrity than fleece. A bag made with Flex-Foam holds its shape and stands upright independently in a way that fleece-stabilized bags typically cannot achieve.
Q: What projects work best with Pellon FF78F1?
A: Structured tote bags, zip-top pouches, box bags, cosmetic bags, and any bag or accessory project where the walls need to stand upright and hold their shape independently. It is the go-to bag stabilizer for quilters and sewists who make professional-looking structured bags.
Q: How do I apply FF78F1 Fusible Flex-Foam?
A: Place the fusible (coated) side against the wrong side of your fabric, cover with a press cloth, and press with a dry iron at medium heat — use a pressing motion rather than sliding to prevent the foam from compressing. Allow to cool fully before handling.
Q: Can Flex-Foam be sewn through on a domestic machine?
A: Yes — use a sharp or denim needle for the best results through the foam layer. A longer stitch length (3.0–3.5mm) prevents perforating the foam excessively. Sewing through Flex-Foam is very manageable with the right needle.
Q: How wide is FF78F1 and how much is on the bolt?
A: 20" wide × 10 yards per bolt — designed for bag panel and handle applications at this efficient width.
Q: Is Flex-Foam machine washable in finished bags?
A: Check Pellon's specific care guidelines for FF78F1. Foam-stabilized bags are generally hand-wash or spot-clean recommended to preserve the foam's dimensional structure over time.
Q: Can FF78F1 be used in quilted bags alongside quilting cotton?
A: Yes — FF78F1 is specifically popular in the quilted bag making community. It pairs beautifully with quilted cotton exterior panels, providing the structural body that quilted fabric alone cannot achieve.
Q: Is Flex-Foam the same as Soft and Stable foam?
A: Both are foam-based bag stabilizers but from different manufacturers. Flex-Foam is Pellon's fusible foam option; Soft and Stable (ByAnnie) is a sew-in foam. Flex-Foam's fusible coating differentiates it from sew-in alternatives.
Q: Does FF78F1 add significant weight to finished bags?
A: The foam is lightweight relative to its structural contribution — it adds body and shape without dramatically increasing the bag's overall weight.
Q: Is Pellon FF78F1 Fusible Flex-Foam in stock at Linda's?
A: Check the current product listing for live availability. Flex-Foam is one of the most popular bag-making stabilizers at Linda's Electric Quilters.
Professional bag structure in every yard — shop Pellon FF78F1 Fusible Flex-Foam at Linda's Electric Quilters.

