A protective boot 2 comprising a first section for contacting a persons leg 4, and a second section designed to contact a persons foot 6； the boot comprising an opening to expose a persons heel； the first and second sections independently comprising a layer of a first three dimensional spacer fabric and a layer of a second three dimensional spacer fabric 8,10, the first layer contacting the persons body and having a thickness of between 5 and 25 mm, a specified compression resistance of 2 30 kPa, and a water vapour transfer rate greater than 1000g/m2/24 hours according to ASTM E96, the second layer having a thickness of between 12 and 25 mm and a water vapour transfer rate greater than 1000g/m2/24 hours according to ASTM E96. There may be a layer of a third three dimensional spacer fabric 12. The boot preferably is closed and secured using an elastomeric material on its outer surface.
