I'm pretty sure it's wool, but cannot guarantee. Top of shoulder to bottom of waistband: 18.5.Armpit to armpit is 18.5. The item "MIU MIU Ivory women's crew neck cropped cable knit sweater, Sz 36, EUC, AUTH" is in sale since Wednesday, September 20, 2017. This item is in the category "Clothing, Shoes & Accessories\Women's Clothing\Sweaters". The seller is "de-lish" and is located in Santa Monica, California. This item can be shipped worldwide.