Amazon.com: White - 1/2" Fusible SS1 Knit Stay Tape - More Than Extremely Fine 0.5" X 25 Yards SewkeysE Knit Swim Suit Interfacing Sold by The 25 Yard Roll (SSI.5-WH) M494.17
1" Extremely Fine Fusible Knit Stay Tape in White - The Confident Stitch
Stay Tape | Pamela's Patterns
Extremely Fine Fusible Woven Stay Tape 1/2 inch – SewkeysE