I have been looking for natural fiber scrubs for awhile, and I’m so grateful to have found this brand. While these aren’t 100% natural fiber, they are made from mostly tree fibers. The result is a super soft & breathable material. I have been wearing scrubs made with the typical synthetic materials for years but never liked how hot and sweaty I would feel by the end of the day. All the cotton brands of scrubs out there are baggy and shapeless. I ordered the Sal top & Catalina jogger bottoms just to try this material and fit before purchasing more. I’m 5’4” and the XS top and XS petite bottoms fit me great. The top is a bit loose fitting but not over sized. I prefer a bit looser fit so that I can move easily without restricted clothing. The material is so soft & breathable. I absolutely love these scrubs and will be ditching all my old ones and purchasing new ‘tree edition’ sets from Mediclo. Love love love these scrubs!