Acrylic,Fleece. Hand Wash Only. SUPERIOR MATERIALMade of stretchy, soft-spun acrylic fiber. Double layers with thermal fleece inside keep warm during the coldest weather. UNIQUE DESIGN: There are two ways to wear, the warm fleece hat with attached mask can protect you from the cold weather and strong winds. The mask can keep the air circulating while keeping warm, and can be tucked into the hat when not in use. FULL COVERAGE: The daily-used skull cap with face cover will offer you 360protection with great heat circulation and keep warm in the chilliest days. The stylish cable knit beanie can be matched to different outfit. ONE SIZE FITS MOST: The soft stretch of the skully allows it to be one size fits most for unisex with large or small head size 22 1/2" -23 3/4". MULTI-USE: Great for gift, daily outing or outdoor sports activities such as skiing, mountaineering, hiking, camping, horse riding, hunting, running, toboggan, etc.