The loose box is 2.2m x 3.5m, big enough for three adult goats so there's plenty of space, ventilation and light and an extra accessory......a big rock for them to jump on, hopefully this will help to keep their feet in good shape. Mac the dog got too close to them yesterday, without any evil intent and got head butted for his pains. That will keep him in his place.
Goats are browsers, they don't graze pasture like cattle and sheep they go for leaves, flowers and twigs and like to stretch up to get their browse. Same goes for the hay, I think they would rather stretch.