GÜTERMANN Maraflex stretch sewing thread — Black Veil, 150 m. This flexible 100% polybutylene terephthalate (PBT) thread is designed for sewing seams on jersey, knitwear and fabrics containing elastane. Its Black Veil shade can be selected to match or contrast stretch-garment seams. The maker's existing instructions recommend low thread tension and using Maraflex for both needle and bobbin thread.

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