Thin, soft, and great for layering
This top is thin, but not at all in a bad way. It doesn't have much bulk, but provides surprising warmth when layered. It breathes very well, and can be worn as a baselayer (or can easily be worn over a thin baselayer). It fits true-to-size, being neither too night nor baggy. It is on the long side, which I tend to like in my layering pieces. In general, I tend to run warm, and for this reason overheat when wearing any sort of fleece while inside. However, the Delta LT is thin enough (and breathes well enough) that I can wear it inside. However, if I throw a softshell over it and go outside, it provides as much warmth as my midweight (and much thicker) fleece pullovers. Oh yeah... and it is one of the softest pieces of clothing I own.