VivoBarefoot Neo Hydrophobic Mesh Running Shoes 4.0 mm Sole - This makes the shoe extremely shallow in height, meaning you are extremely close to the ground, giving amazing performance. 3.0 mm Press EVA Insole - Helps to keep the shoe extremely low profile but also gives a tiny bit of cushioning with the EVA. Removeable Sockliner - Moulded into the shape of the foot for a custom fit. Eco-Crendentials - A 100% Vegan, Dual density injection moulded for glueless, mono-material shell. Ultra Thin Puncture Resistant Sole - Provide maximum proprioception and protection to your feet.