Garter-top, rib-bottom tube socks

I just finished making these Simply Irresistible Socks, Worsted by Christie Archer. I saw the pattern go by in my Ravelry friends feed and was instantly intrigued, because I've never seen a sock like this before: they don't have any heel at all, they're a straight tube, but because the top of the foot is worked in garter stitch and the back in 1x1 rib, they contract and stretch to fit the foot anyway, at least, going by the photos.

Even though the weather is definitely warm now, I cast on a pair of these in heavy worsted wool, boot sock weight, because that was the yarn I had around when I was waiting for the yarn for my next project (a chunky cotton eyelet cardigan - Corran Cardigan by Rebecca Clow). I finished the second sock today and wore them around the house for a couple of hours and they do indeed seem to work as advertised, for me! I'm looking forward to making a longer pair and a pair in fingering weight sock yarn after I've done some more seasonally appropriate summer knitting.