On hot, sticky summer days, the Etxeondo Feather Jersey pairs perfectly with the Feather Bib shorts so that you stay cool and dry from head to toe. The jersey was constructed from Etxeondo's Microsystem 1. 1 fabric. This fabric is available in variable thicknesses depending upon the thickness of the fibers and the 1. 1 designation indicates that the Feather jersey was sewn out of the lightest knit available. To that end, it is near a second skin and works to move moisture from perspiration to the surface where it it able to quickly evaporate. If you're still stifling, the three-quarter invisible zipper lets in the desired amount of ventilation. In order to facilitate keeping you cool, a jersey needs to fit like a second skin, If it doesn't, the fabric won't move moisture away as quickly as needed. Etxeondo uses computer modeling to ensure that its jerseys fit your body, no matter what size you wear. They smaller jerseys, for example, are not just shrunken Larges. Computer modeling allows optimal use of fabric to ensure even stretch across a jersey--this also reduces waste. Aiding the flexibility are elastic seams. Shoulders were given a raglan cut which allows flexibility to ride in the drops while minimizing bunching. The sleeves are finished with a non-elastic band so that your skin won't get pinched. Finally, the Feather jersey has three back pockets and reflective details. The Etxeondo Feather Jersey - Short Sleeve - Men's is available in six sizes from Small to XXX-Large and in the colors Red and Black.