144 prewound Size L (SA155 / Style L / Size 9.4) plastic-sided bobbins, wound with 40S/2 spun polyester thread in White. The go-to bobbin thread for general sewing, quilting, and projects with light-colored top thread.
Unlike embroidery where the bobbin thread hides behind the design, sewing and quilting show the bobbin thread on every seam back — and on thin fabrics, it can show through to the front. Use White bobbin thread with light-colored top threads for clean, invisible seams.
Decision Guide:
White/light top thread → White bobbin (this listing)
Dark top thread → Black bobbin (LPB-40S2)
Multiple colors → Variety Pack (LPM-40S2)
Embroidery only → 60S/2
Fits SA155 / Style L bobbin machines. Compatible with Brother, Babylock, Janome, Singer, Juki, Pfaff.
DOUBLELIN has manufactured embroidery machines, DTG/DTF printers, and machine parts since 1989. Our bobbins are produced in-house.