The Irideon Wind-Pro Knee Patch Breech is rain, snow, wind and mud-resistant – really! Designed and patterned in the saddle for the perfect no-chafe fit. Edge stitched seams provide a flattering, tailored look. Chamisoft knee patches or full seat for non-slip performance. IT Comfy and warm Polartec Wind Pro-Fabric, a 1.5 inch no-roll waistband and gripper elastic at ankle have made the Wind-Pro Breech our testers’ favorite cold weather riding breeches – ever! * U.S. Pat. D483,551 and additional patents pending. Material: Polartec Wind Pro – 88% nylon, 12% spandex. Made in the USA.