Pearl Izumi P.R.O. Bib Cycling Tights. You'll have no reason to stay cooped up indoors when the temperatures outside plummet with the Pearl Izumi P.R.O. Bib Cycling Tights to wear. Specifically designed to handle Mother Nature at her fickle worst, the bib Cycling Tights' one two punch of P.R.O. Thermal Fleece and AmFIB Softshell fabric have got your back and, uh, of course your legs covered so you're warm, dry, and protected in the worst of wintry weather. And with no integrated chamois you're free to pair these with your favorite Cycling Shorts underneath for perfect riding comfort.