SPIKE+ by Solepex® soles maximize grip when entering indoors. Normal shoes with spikes can be extremely slippery on a hard floor surface. SPIKE+ by Solepex® sole’s spike structure is flexible, so the surrounding TR-rubber has the contact on the floor surface. Outdoors SPIKE+ by Solepex® sole’s spike structure with a controlled tilt function improves the grip of the hard metal tip on ice. Depending on way of walking and floor surface material, marks may appear on floor surface.