Well, since I had no idea what "zero-twist" means (b/c I'm out of the loop, get it?) here's an explanation I found on Macy's site:
Twist refers to the number of twists per inch of yarn. The lower the amount of twist in a yarn, the more plush the towel will be. A higher twist adds strength and uniformity to a yarn, resulting in a more durable, substantial feeling towel. Low- or zero-twist fabric can only be constructed from longer staple cotton yarn.
Thus ends the educational portion of my post. If I am understanding what it says, this is a less durable, less substantial-feeling, but more plushy-feeling, towel than one with a higher twist.
Does anyone have any experience with zero-twist towels, or with these particular?