Giordana Short Sleeve Base Layer: The Super Light Weight Base Layers are Italian made & are designed to provide you with even more layering options. These pieces are made from Polypropylene fabric for excellent wicking capabilities. The fabric rapidly moves moisture away to the outside layer where it instantly evaporates so your skin underneath remains dry & comfortable The tubular knit creates a varied density form fit so the garment confirms to your body like a second skin Designed to keep the materials close against the body to regulate body temperature Light elastic at the cuffs & at the waist keeps the garments perfectly in place throughout a range of motion on the bike