Clarks Active Air Active Air - everyday shoes Active Air is hard on the outside and soft inside. The outer part of the sole (outsole) is made of hard rubber or polyurethane. The inner part the insole is made of a soft material that adapts perfectly to the shape of the foot. When the foot hits the ground the network of channels and chambers filled with air located in the sole of the shoe is compressed absorbing the impact force. The air moves to the front of the shoe and pushes the foot upwards. Air channels are also located in the insole. They are a mirror image of those in the sole and support the foot. Felt mulch located in the insole absorbs moisture and helps keep the foot dry and cool
Rubber sole Rubber sole - rubber with a high density is used in the production of highly durable outsole in order to ensure good adhesion stability and support the natural freedom of bending the foot while walking. Rubber sole is also used in some models to achieve sporty look.