Initially, I was a little skeptical about how good a compression top I could expect for roughly $14.00. However, after using for two days as a base layer when running, I am pleasantly surprised. Overall, I see this as being better suited for temperatures in the 30s-and-up, versus the low-to-mid-20s, like the last two mornings. The fit and movement were excellent and comparable to Nike Pro-Combat and UnderArmour ColdGear. In fact, I liked it enough that I ordered a second one.I used this as a basSee full review