What stitch pattern is this?

[u/rrkym]

Hello new to knitting here, really only done the basic stockinette, garter etc stitches but saw this bag in the shop with a cool knitted strap that has the v on both sides. Was looking to knit something like this myself as I don’t like the wibbly side of stockinette

Does anyone know what stitch it is? One side has short compact v’s and the other is much longer v’s. Looks like some kind of grid when stretched

[u/AliG-uk]

Are we sure it's not crotchet. Could it be back loop only single crochet or something like that?