Hello, On the manufacturer's website, there are two widths of 5.0 toe cap and 5.0 toe cap slim fit socks (https://www.lenzproducts.com/fr/faq/allgemeines) Is this product the "Lenz Heat Sock 5.0 Toe Cap + Lithium Pack rcB 1200" because in the Galaxus description, it is specified that the model is ideal for narrow feet?