I have plenty of combat boots that I use at different times of the year. Matterhorn gortex steel toes work great during the winter. Barely feel any chilling of the toes, and I usually wear standard weight socks. For summer riding I like either the standard basic all leather combat boot issue, or my Marauders for ventilation. Both the Matterhorns and the Marauders are made by Corcoran in the USA which is just another criteria of mine.
