Lightweight foam cups for lingerie sewing, swimwear and costume projects. Provide shaping and modesty under stretch fabrics without adding bulk. Edges can be trimmed to fine‑tune coverage or neckline shape; sew into bras, camisoles, dancewear or one‑piece suits. Compatible with most knit fabrics and suitable for hand or machine stitching. Includes two size A cups—ready to insert into new makes or refit existing garments.