"The torso size is only a sleeve w/o snaps on the end so not useful in attaching a blanket or quilt"
I bought the torso sheet along with the alpine down blanket. From the pictures, I assumed that the sheet would encase one end of my pad, giving me snaps in three directions to attach the blanket. It is basically a 40 " sleeve, open on both ends and snaps only on the side. So it is pointless for this purpose and I would recommend the therm-a-rest fitted sheet vs. these fast and light. My disclaimer is the other sizes look like they are designed differently (more like the fitted sheet that straps from the back) and they have snaps at the ends, so my comments only apply to the torso size.
"Nice sheet to increase sleeping comfort"
I bought this sheet to pair with a Thermarest ProLite 4 mattress and the Tech Blanket. The sheet pairs nicely with the mattress, and is soft and comfortable to the touch. The only issue I have is that this sheet isn't totally intuitive when pairing is to the blanket. It doesn't seem that the snaps and connection points don't match the way I expected them to. Otherwise, I'm very happy with the purchase!