Great for alpine activities like skiing, climbing and mountaineering, the Icebreaker Women's Rock Zip Shirt is a mid-weight pullover with a regular fit for active lifestyles. The versatile merino fabric density has a sweater weight that's ideal as a base layer in cold conditions, but the Rock Zip can also be worn as outerwear through the alpine summer months. Icebreaker added thumb loops at the cuffs for complete coverage. Keep in mind that the 15-cm. front zipper isn't as deep as some zippered alpine pullovers, although most active women don't mind during winter and early spring.