Size: Adult regular fit, One Size fits most. Also fits juniors and teens. Dimensions: 10.25" (W) x 8" (L) Machine knit 100% Acrylic Classically soft fabric and midweight construction make it a great choice for chilly weather or heart-pumping adventures on colder days. Unlined beanie for mild weather and high-exertion activities. HELP THOSE IN NEED, #PROJECTWARMTH: Share a photo wearing your Turtle Fur product and tag us in it. Use #projectwarmth in the caption. We'll see it and send one hat or cold weather accessory to someone in need.