Excellent for skiing, climbing and mountaineering, the Icebreaker Coronet 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 Coronet 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 20-cm. front zipper isn't as deep as some zippered alpine pullovers, although most guys don't mind during the winter and early spring.