This pattern is also known as “Half-Zip Sweater” in Men’s Knits: 20 New Classics.

From the Book:
A great casual piece for weekend wear-- a simple long-sleeved sweater with a collar, half zipper, and breast pocket detail. Lengthen the life of this robust sweater with the optional knitted elbow patches, which will not wear out.

Sizes:
Small to fit 36” chest (actual chest 42.5”)
Medium to fit 38” chest (actual chest 44.5”)
Large size to fit 40” chest (actual chest 46”)
XL to fit 42” chest (actual chest 48”)
XXL to fit 44” chest (actual chest 49.5”)

Other materials:
10” Zipper, (Optional) 28” of 1” wide cotton tape