The bag size is 81x55x35 cm, which exceeds the 158 cm (length + width + height) max allowed by SAS. The fact that it will look a lot bigger than the other 3 bags (2 at 75x52x31 and one at 69x49x29 - all Samsonite S’cure) might draw attention to it and cause it to be measured.
i can use a large holdall instead but it’s so much easier to have wheeled bags when we arrive at our destination so that we don’t have to bother with luggage trolleys.