Been wearing Underworks since 2005. This style of garment has gotten an inch shorter over the years and I don't like that. When I was really fat, the shorter length made my gut stick out even more and it would bunch up and cut into my mid section because it wanted to roll up but couldn't actually roll because there wasn't enough material. The extra inch made it more comfortable. It would roll but I could tuck it under. However, this is a great binder. It works just as well as the tri-top which has 3 layers. This only has one layer. I got this in XL and yet the tri-top I have that is the same size is 2XL so don't use past experience with other garments to gauge what size you should get... I can't say the size chart works for everyone. I wear my binder just slightly tight like a tight shirt would fit. According to the chart, I'd wear a small. But I wear an XL and it binds me perfectly and tightly but not too tight. If you don't know what size to get, don't be afraid to order 2 sizes and be prepared to return one to save time having to order again if the one you buy first doesn't fit. Honestly tho, smaller sizes bind just as tight as the size I wear comfortably. If you've never had a binder, know that you don't need to squash yourself to pieces. If you have to step into your binder and have someone help you, you're probably able to wear the next size up without it making any difference in how well it binds your chest... you can only squash yourself so far.