MATERIAL: Made of high quality steel which is sturdy and durable. Both ends of the wire are well wrapped in plastic and won't poke your skin. Comfortable to wear safe to use and able to meet your long-term needs. The best choice for your clothes making process. ADVANTAGE:These underwires are practical for use in most bras and lingerie. these wires are considered a regular daily wear length which may be shorter than some wires but are too long for plunge or demi style wires. when replacing a wire please check length measurements. Easy to Use:This underwear steel wire is very easy to use. You only need to put it into your pre -sewn fabric to easily achieve the effect you want and even novices can complete it well. Please confirm whether this product meets your needs before purchasing. PACKAGE INCLUDES:You'll get 30pair bra underwires for the whole package. Approximately 70mm long 133mm wide. It's the regular size for most figures meet your crafting needs. Save Money:You can save your favorite and bras because of the underwire breaks Just check the detailed measurements then order it. The underwire is an essential accessory for creating a well-fitted comfortable bra.