KIWI RATA Women's Zipper&Hook Hourglass Latex Underbust Corset Waist Training Body Shaper Hook & Eye, wash by hand only closure Material: Stretch natural rubber outer and cotton lining,7 Steel Boneds. 7 spiral felixboning supports,flexible and durable,bend easily but recover quickly to origin. Zip up front closure(3 rows of hooks Lining) allow for the size adjustment for the shrinking midsection. KIWI RATA shapewear Great for waist training/sport/body sculpting. Occasions:Everyday for lose weight /Gifts for friends.