ADORNAWomen Cotton Spandex Blend Tummy Tucker slimwear for Full Waist Shaping with Anti-Rolling Technology

My size is XL size which size perfect for me

What is Small size cm

what is the width of this band. how does one wear it. doors it have Velcro. what fabric cotton or synthetic?

I want to replace it from xl to m.because it is very lose(xl)but the m would fit and tight enough.thus i request the seller to accept a replacement.