Freezing on the slide

How do you put a time limit on freezing? We didn't expect the wind to make the cold so much colder. Bundling up my little guy and myself took at least thirty minutes. All we wanted to do was go play in the snow. We made it outdoors. The first thing he did was go to his play fort that daddy built. He knows the slides on the play fort are extremely fast when they're covered with snow. He got up there and it was a good thing I was at the bottom to catch him. He came down so super fast. We only ended up staying outdoors for about half an hour. It wasn't so much the cold it was the wind that was ridiculous. So we went back inside to have some hot chocolate by the wood stove.