UW417C coated, sprung-steel underwires provide structured C-cup support with enhanced shaping capabilities for fashion and function. Featuring medium-depth profiles and consistent seam-side dominance, these wires offer optimal support for balconette, full-cup, and supportive plunge styles. The reliable progression across sizes 12C to 24C ensures consistent performance for both everyday and special occasion wear.
Best for:
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 results we recommend Formline plush wire casing which is suitable for next-to-skin application.
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.
Out of stock items are usually under manufacture. Get in touch if you need to know the ETA. Or click 'Notify Me' to get an email when back in stock.
For enquiries regarding bulk orders or expanded grading options please email us (MOQ may apply).
Shipping options are available at checkout.
Shipping costs will vary based on the weight of your selected items.
If the shipping calculation is not what you expected, please email us for a quote.
If no shipping options are available at checkout, please email us hello@jackstock.com.au and we can provide a quote for freight/direct delivery.
For Terms & Conditions, please see documentation at the foot of the page.
