École de sports de neige autorisée (Suisse)
Wyss Snowsports est une école de sports de neige officiellement autorisée en Suisse
"Jonny spent just ten hours with me over two days and got me ready for the Engadin Marathon the next day! He was brilliant."
"We had a fantastic powder day with Alwin. He is one of the best guides I've ever been riding with. Highly recommended."