2XU Men's Thermal Sub Zero Bib Tights 90% Polyamide/10% Elastane Imported Sensor Mesh Bib Straps for comfort and breathability 2XU's 5:10 XSTRETCH membrane fabric for unparalleled weather protection and breathability Velo Pro Lite fabric for maximum warmth without bulk Italian Multi-Density, Multi-elastic Fusion Pro Chamois for maximum comfort The ultimate cold weather cycling bibs Sensor Mesh Bib Straps for comfort and breathability