Sock yarn, 4-ply, self-made decocard, mosaic pattern by Alfred Koppold
25:25 backbed and frontbed = 100 needles in the round
front Decocard, back horizontal stripes
CX, SS 4.75 / HX, SS 6, colour change RC 4
about 200 rows in pattern, finished with 2 rows GX / N after transferring bb stitches to fb, waste yarn and cast off by hand.
The two tunnels were knitted first.
Tunnel one: Automatic hung hem 20 rows, when finished all its needles on bb
new zigzag line AX / N , then GX / N , again 20 rows, to close the second tunnel transferred the tucks from bb to fb
then mosaic in the round.
The pattern is actually supposed to look like on the flat swatch in the last two pictures. But when I knitted it in the round it became different. I still do not know why…

One day later: Now I know why the pattern turned out wrong, I had my Deco on 2. But when knitting mosaic in the round, Deco must be on 4.
The first and the last few pictures show the correct pattern, but the bag in a more simple construction - just double mockrib.
(Much less work, though)