Designed for heavier knits, the rounded tip passes between loops to protect fabric structure and reduce skipped stitches. Size 90/14 suits sweatshirt fleece, ponte and sweater knits on most home machines. Use with polyester or poly/cotton thread for cuffs, bands and stable seams that recover well after stretching. Replace dull needles to maintain smooth results on stretch fabrics. Choose needle size according to fabric weight for best results.