It's a cotton-blend sweatshirt fabric; The cuffs, hem and legs are ribbed; Product Content and Features Product Content: Main fabric T-Shirt: 100% Cotton Main fabric Pants: 18% Polyester 82% Cotton Main fabric Cardigan: 82% Cotton 18% Polyester Product Features: Pattern: Printed / Patterned Fit: Loose Thickness: Medium. Thickness Sleeve Length: Long Sleeve Product Type: Suit Fabric: Sweatshirt Fabric Material: 100% Cotton Gender: Girls.