From the top of the Sairon four man chair (and the Vieille button lift) a sharp right on to the green Marvel run takes you to the start of the 7 Frères.
Forking right after the first 100 metres off the Marvel, the 7 Frères is quite wide and descends shortly but steeply down towards the renowned Igloo restaurant (which can be reached if your skis are waxed well and of you schuss from the beginning of the run - but the end will be uphill!).
The Igloo can be accessed more easily via other routes.
The nearest lift after the end of this short run can be found by turning right onto the Vieille.
Here you will find the Vieille button lift.
The best restaurant to go to is the Chalet d'Clair at the top of the Vieille button lift.