Yes it is. It's slightly tapered at each end, but tbh I don't think that makes any difference. It also has a square 'patch' sewn to the middle (the contrasting colour in the pics) which you stuff the sling into for storage. Again, not necessary per se, but would prob be v easy to do. It's in DS's room at the moment, and I'm too chicken to sneak in there at the moment, but will measure it tomorrow
Actually, Soupy's link probably has all the necessary info, but I'll measure mine anyway for the purposes of comparison