Chibostar Men's Cycling Bib Shorts 3D Antimicrobial Pad 80% Polyamide and 20% Elastane Lycra at leg opening for soft stretch comfort with silicone for added grip Mesh bib upper provides stability with comfort Moisture Wicking Fabic is wicking and breathable to regulate body temperature Note: Our size is usually 1-2 size smaller than US size,size chart is shown in the left pictures'area