Fabrics: Combed cotton | 0% polyester | Body 100% cotton | Rib 96% cotton 4% elastane | All garments sold at Feits are 100% sweatshop-free. Material made from 100% high quality cotton, durable, and easy to care for. From experience, we have seen that the garments tend to run a bit small. If you are unsure of what size you need, we recommend getting the item one size larger. Babies grow quickly so getting it a little bigger isn't a bad thing.