Please don't need to cut a piece of the cloth and check the fabric composition in your lab. It is made of polyester and spandex
Features: Two Piece Outfits For Women, Sleeveless,Draped, Drawstring, Tops And Short Sets
Occasion: Jogging Suits For Women;Great For Shopping, Jogging, Vacation, Home, Dating Or Casual Daily Wear Etc
Material:81%-90%Polyester;2 piece outfits for women;Soft and Stretchy.
Wash: Hand wash or Machine Wash in cold water, gentle cycle. Hang to dry to avoid wrinkles
Attention: Not Size Chart, Please check the size chart in left picture (last image) for fit.
XuFeng Active Women Ribbed Ruched Drawstring Tank Top and Biker Shorts Two Piece Set