Specialized rbx sport bib short is the entry level bib short to the rbx sport range this fine garment suits a consumer who is new to road racing or long distance cycling moisture transfer fabric as is standard in specialized39s rbx clothing range helps keep you nice a cool when the weather turns toasty with the added benefit of uv50 protection from those rare rays of sun a fold over leg cuff with silicone print gripper helps to keep your shorts in place the specialized rbx sport bib sho