You can machine wash your towelling bathrobe with other towels, at 30°C. Avoid washing with other clothes or anything that could snag the towel threads.
Hang or tumble dry your robe, on a warm heat to maintain softness. Don’t use high temperatures as this can damage the fibres of your robe.
There’s no need to iron your robe, just give it a good shake before you put it away. With the right care your bathrobe will keep its softness for years to come.