This is a knit hat for dogs with ear holes. It's made with three strands of yarn, inspired by denim, to make it fluffy, warm, and durable. The face and neck are ribbed, and the crown is stockinette stitch. To ensure a comfortable fit, it's made with soft, stretchy, and skin-friendly wool blend yarn, using knitting needles. Although crochet hats are faster to make and are stiff and don't stretch well, I've chosen to use knitting needles, even though it takes more time. I've been making dog knit hats for 5 years, and I knit each stitch carefully, hoping your dog will spend their time cutely and warmly. ■ Size Face circumference: 36cm - 40cm Please measure your dog's face circumference, from the base of the ears on the forehead, around under the chin. ■ Materials Main body: 100% wool, and a combination of 100% wool and 70% wool/30% acrylic Pom-pom: Acrylic, wool blend As this is a handmade item, it is not perfect like commercially available products. Each one is carefully knitted, but there may be some loose thread ends or slight irregularities in the stitch pattern. Knit products may unravel or tear if pulled strongly or subjected to impact. Please hand wash in lukewarm water and avoid wringing. Since it stretches when hung, remove excess water with a towel and dry flat. It will be shipped via Yu-packet Post Mini. It will arrive flattened, but please shake it gently or steam it to restore its shape.