Shaft Height: Approx. 10'' Tall. Rocky has built features into this work boot to ensure that your feet remain warm, dry and comfortable. These boots were built with 400 grams of Thinsulate Ultra Insulation, this allows the interior to remain warm on even on the chilliest of days. It is important that you select a work boot that is made with Rocky waterproof construction, because it guarantees that the interior will remain dry. Then there is the Terra Suspension footbed; this polyurethane insole cushions your steps and makes walking in these 10 boots a comfortable experience. It is great to have an EVA midsole, it keeps the footwear lightweight and it supplies cushioning that feels sublimely comfortable. On the bottom of this men's boot is the Lynx outsole, it is incredibly durable and you'll receive great traction that'll allow you to walk across all different types of terrain with ease.