Efina™ is a 60wt 100% extra-long-staple Egyptian cotton, double-gassed for an ultra-low-lint finish. At 60wt it's a fine thread, and that's the point — it buries itself in the fabric so your piecing seams lie genuinely flat and your appliqué stitches disappear instead of announcing themselves.

These packs are a collaboration with Petra Prins, the Dutch fabric designer and author, and the colors are chosen to sit alongside her fabric lines and quilt patterns rather than to cover a spectrum. If you work with her fabrics, this is the shortcut.

The Promenade pack is a ten-spool spread with enough range to carry a whole quilt top rather than a single block.

Details

• Material: 100% Extra Long Staple Egyptian Cotton, double-gassed
• Weight: 60wt
• Spool size: 150 m (164 yd) each — 10 spools per pack
• Best for: Hand and machine piecing, hand and machine appliqué, fine-detail machine quilting