The Brooks B67 Saddle is the modern version of the B66 model, first featured in the 1927 catalog. Classically sprung for supreme comfort, the B67 features single rails for attachment to modern micro-adjust seat pillars. Features: Classic: lifetime comfort, shapes to your body, cool in hot weather Aged: comfort from day 1, quickly shapes to your contours, laced to retain the shape Specifications: Width: 210mm Length: 260mm Rail Size: 7 x 7mm (Standard) Rail Material: Steel Cover Material: Leather Gender: Men's Discipline: Classic, Road Color: Black (w/ Black Rails & Chrome Springs) Weight: 850g