Style UW416 coated, sprung-steel underwires offer specialised D cup-sized options. Available in both UW416D and UW416DD configurations, this wire style provides consistent progressive scaling; the D-cup version features a balanced medium-depth profile, while the DD-cup offers a wide, supportive base with increased depth for fuller bust support.

UW416 wires maintain predictable width progression and steady depth increases, making them ideal for designers and makers who require specific cup-volume variations across multiple band sizes.

Best for:

• Balconette
• Full-coverage
• Round or Scoop necklines
• Supportive/ structural styles
• Sweetheart

All Formline wires feature a unique nylon coating for the protection of wire casing and seams from wear and tear. Additional coating at each end of the wire provides a high level of comfort and minimises wire 'push-through'. To ensure high quality garments, we recommend using Formline plush, skin-safe wire casing.

Manufactured to a high standard; all wire sets are individually checked for quality, consistency and integrity.

See size guide for dimensions. Please note that volumetric cup sizing is estimated only and wires may be applicable to a wider range of cup sizes than described. For sampling, or prior to production, we recommend the purchase of a pair to test with garments and patterns. For enquiries regarding bulk orders or expanded grading options please email us.