Redback boots have the size on both the front and the back pull tags, as well as printed inside. There is no mistaking them. Regardless of what the OP said in the description about fitting a size 7, they were listed as size 8 boots. The tags would say they were size 8. Therefore, they are described as the buyer got a pair of size 8 Redback boots. As there are no women's range of boots, they can only be listed in the men's category. If they were listed in ladies, then they would have listed them in the wrong category.

Just because the OP has some women's items listed, doesn't mean they can't list something of a male variety. Selling items for women also doesn't mean the OP is female. A close male friend sells women's clothing. Occasionally he'll list something he's bought for himself and then decides he doesn't want it after all.