Unisex ski socks are designed with generic proportions to fit a range of foot shapes, making them a perfectly fine choice for casual or occasional skiers who want a budget-friendly option. They work adequately for most people and are great if multiple people in your household share socks or you just need a backup pair.
The trade-off is that unisex socks don't optimize for anyone's specific foot shape. Women may notice heel slippage or excess material around the calf, since unisex socks tend to be built with broader heels and larger calf circumferences. Men with narrower feet might find them a bit loose as well. In a snug ski boot, even small amounts of bunching or slippage can lead to blisters, pressure points, or cold spots over a full day on the mountain.
If you ski frequently or have hard-to-fit feet, investing in a gender-specific sock is worth it. But for a single trip or mellow resort days, unisex socks will get the job done.