MATERIAL: Acrylic.The knit cotton hat very soft,absorb sweat, keeping the head warm and dry. SIZE: Hat circumference:18.1"-19.7. Please check your baby's size carefully before you make order. Thank you. Simple and cute design: High brightness single color for girls, hollow hat with beautiful knit bow. Easy to wear and pair with other clothes, outfits, coat, jackets, sweater. Elastic brim for warmer and suitable for most people. COMMON OUTDOOR USE: Beanie cap is soft, stretchy, warm, cute, beautiful. Wonderful winter knitting hats for kids wearing while skiing, snowboarding, skating, sledding, snowshoeing, camping, hiking or any outdoor winter sports and activities. Soft material makes kids feel very warm and comfortable. BEST GIFTS: It is a great gift idea for mother, grandmother, girlfriends and daughters in Thanksgiving, Christmas, New Year, Birthday, Halloween etc. WARM TIPS: Please note that there may be some chromatic aberration due to uncontrollable reasons such as light and display. Since it is manual measurement, please allow the size to have an error of 0-1 inch. Please confirm the size before your purchase.