The Jack Wolfskin Sandal Sock from X-Bionic is an innovative product, which also scores with high quality, design and functionality. It is the first sock that has been specifically developed for wearing in hiking sandals. Its design follows the function, clearly marking the pressure points. The sock complement the hiking sandals by protecting the foot against dust, rock and abrasion thanks to the Mud-Guard feature. The patented Lambertz-Protector and HD-pressure points reduce friction and pressure. The Biosplit footbed enhances the stability and the ventilation of the sole of the foot.