P.R.O. Series baselayers are all about fit and function. Fit comes from over 50 yearsof tailoring performance apparel for the worlds best athletes. The tuckable length,drop tail, and close to body fit were all dialed in by our gifted pattern makers,who also develop wind cheating time trial suits. Function is delivered by our P.R.O. Series fabric with Minerale that transfers moisture faster than wicking polyester to keep you dry and comfortable over a wide range of activity intensities. P.R.O. Transfer Fabric with Minerale transfers moisture better than the competition to keep you dry and comfortable. Exceptional odor absorbance. Sleeved tops layer perfectly under form fit tops.