The Arc'teryx Theta AR is the most expensive jacket in with a price tag of $625.00, but it is also the most heavily featured. In many ways it is very similar to the Arc'teryx Beta AR, but has a much lower hem line that protects better against snow while skiing. The Theta also has an extra mid-back draw cord to snug up the empty space and includes a sleeve pocket and larger interior pocket. It has a GORE-TEX Pro membrane paired with a combination of 80 denier and 40 denier fabrics that make it like a bomb shelter when it comes to weather protection. No flaws. Worn a couple of times.