Upper Suede / Mesh Lining GORE-TEX(R) Performance Comfort Footwear Footbed Air-Active® SOFT PRINT drysole Sole Alpin Rigid rubber-profilesole by Vibram® with PU wedge and integrated spoiler Weight approx. 580g (size 45) Air Revolution® technology by Meindl The air-conditioned footwear. The innovation for optimum conditions in the boot and improved breathability. The entire tongue is a combination of 3D mesh and a cushioning reticulate perforated sponge material (1) that causes the pumping action. To achieve an anatomical shape a stabiliser made from micro fleece (2) is sewn on to the tongue. A very strong Velcro strap (3) is integrated in the forefoot area and at the end of the tongue to secure the tongue. More ventilation more pump-action. The technology of the Air Revolution® line was further improved. In addition a sock has been developed that is tailored to the function of the boot and makes the Air Revolution® system perfect. The tongue now has newly defined ventilation ducts. The big ventilation perforation (3) is on both sides and covered by mesh material (1). Thus there is no impairment of ventilation or reduction of sturdiness. The waisted tongue adjusts perfectly to the shape of the foot. Also new are the reticulate large-pored foams that are used and have a positive effect on adaptability.