Yes! Some hip protectors are designed to be machine washed as a complete unit, pads and all. These typically have the protective foam permanently sewn into the shorts, so there's nothing to take apart before laundry day. It's the most convenient option—just toss them in the wash after a long weekend on the slopes.
The trade-off is that repeated machine washing can gradually break down the impact-absorbing foam, potentially shortening the pads' effective lifespan. Since the pads are permanently integrated, you also can't swap them out for fresh ones without replacing the entire garment.
This style is great if you prioritize simplicity and don't want to fuss with reinserting pads after every wash. Just follow the manufacturer's care instructions—typically cold water and air drying—to help preserve the protective foam as long as possible.