Note: This is a shirt, not a sweater. Material: Acrylic, Cotton. The knit part is acrylic and the shirt part is cotton. Breathable and lightweight. Perfect for fall and spring. Designs: Patchwork shirt, turtleneck, ribbed long sleeves, curved shirt hem, button down. 2-in-1 Style Shirt: Add a shirt hem on a crop top, create a layered dress style. Don’t bother thinking about how to match, one shirt gives you a stylish look. Occasion & Collocation: Style up it with jeans or legging for a casual outfit, or pair with coat or cardigans in cool days. Suitable for casual wear, work, vacation, party, dating, etc. Clothing Care & Size: Hand wash, low iron, no tumble dry. Small= US 2-4, Medium= US 6-8, Large= US 10-12, X-Large= US 14-16. Please check the Size Chart ( the Last Image ) Before Ordering.