Quick view Berry Casing Wirefree RRP: NOW: $3.90 Bra Wire Casing Underwire casing for bra, costuming and swimwear construction. This 10mm bra casing is plush and is very soft to touch, ideal for bra making. Sold by the metre and used to insert underwires into your bras and cover the cup seams... Add to Cart Add to Wish list Compare