Swisstopo 284S Mischabel Ski Map is a great map for ski touring in Zermatt, Saas Fee and the surrounding areas. It also covers the Haute Route as it passes through this zone on the way from Chamonix to Zermatt. Also available as part of a package.
The 1:50,000 scale is detailed and the quality of the Swisstopo mapping is amazing. Map 284S covers the area from the Weisshorn in the west to Macugnaga and Italy in the east. On the rear of the map is a bonus section showing Gressoney in Italy. Clear overlays of ski and snowboard ascents and descents are marked and there is extensive info regarding local huts and refuges on the back also.
Swisstopo 284S Mischabel is an essential map for anyone ski touring or splitboarding in the Zermatt or Saas Fee region and is also a good choice for summer hiking and climbing too.