Torrid Suede Heeled Slouchy Wide Calf Boots like new possibly size 10

Torrid like new black slouchy suede wide calf boots with 3.5” heel. Silver side buckle detail.these boots are quality made and clean with no signs of wear. Unfortunately the size is not written anywhere. I have compared them to another pair I have and I’m guessing they are around a size 10 W. If anyone knows a better way to determine the sizing please let me know. Great boots.