The technology of our underwear even on outerwear garments: owing to the properties of Carbon Underwear®, the skin is always dry and thermoregulation is ensured. The skin is free to breathe, without layered fabric that suffocates it, and this guarantees effective performance and unmatched comfort. This short-sleeve jersey can be worn both in direct contact with the skin or on top of an underwear product.
Check your size: https://www.six2.biz/en/prodotto/chromo-jersey-short-sleeve-bike-jersey-carbon-activewear/
Click Guide to Sizes at the lower left of that web page