Zip Waist Trainer by Hourglass Fashion - Zipper Corset Waist Cincher No Hooks, No Rings, No more difficulty. Our Revolutionary Zip Waist Cincher does away with Hooks and provides our customers with the same level of support while taking a fraction of the time to put on. Inner Layer Made of 100% Pure Cotton For Your Comfort 9 Spiral Boned Steel Ensure Shape Is Kept Over Time Improves Posture and prevents long term back fatigue and injury Firms And Promotes Curves To Give our Elegant Hourglass Look