Designed in Switzerland and made in Italy, these socks are the best thing you can offer your feet when cross country skiing. - Extra padding in functional zones: heel, toe, toe tip, ankle, shin, calf - Your Achilles tendon is protected by the Lambertz-Nicholson Achilles Tendon Protector 4.0 - Activ Bund cuff for a solid grip without squeezing - Heel, toe and toe tip protectors - Suppronation Bandage supports a healthy foot position - Air-Conditioning Channel 4.0: great ventilation - HeliXCoil structure at the calf offers light compression, helping with circulation - Traverse Airflow Channel for superb ventilation - Iso Blocker reduces cold bridges - 2 year guarantee against flaws in material and manufacturing