A moderately breathable balaclava can be a solid choice, but it depends on when and how you ski. These models prioritize warmth over moisture management, so they're best for genuinely cold days when you're cruising groomers or taking it easy rather than charging hard. If you typically ski in bitter conditions and run cold, the extra warmth retention can actually be a benefit.
The trade-off is moisture. If you start working up a sweat—hiking to sidecountry, skiing bumps, or just running hot—moisture will build up inside the fabric. That dampness can make the balaclava feel clammy, and it significantly increases the chance of your goggles fogging, especially when you stop and your breath lingers. You'll need to manage this by pulling the balaclava down during breaks or using anti-fog goggle wipes.
If you're an aggressive skier, run hot, or mostly ski milder temps, go with good or excellent breathability instead. Moderate breathability really shines for cold, low-output days where staying warm matters more than staying dry.