Cross-Back Swimsuit Sewing Pattern with Keyhole Cutout

This model is designed for swimming and synchronized swimming, providing the perfect balance of comfort, durability, and freedom of movement. The swimsuit features thin straps and an open back that accentuate the shoulders, allow unrestricted motion, and ensure a smooth, secure fit during active movement in water. With its balanced cut and reliable ergonomics, this is a favorite model among synchronized swimmers. The pattern is supplied without seam allowances, so you can add them yourself based on fabric type and sewing preferences. Available in multiple formats—PDF A4 for home printing, PDF A1 for plotters, and an editable vector file for custom adjustments. Recommended swimwear fabrics include chlorine‑resistant biflex, Lycra/spandex, and high‑stretch performance textiles that maintain fit, flexibility, and comfort even after repeated use in water.