Selle Italia SLR Advan Opal S3 Steel Rails White MFPN=064A521REC004 Upper material is made of

Upper material is made of a special polyurethane cover called Soft-Tek

Thickness: 3mm

Competition race spokes and Squorx nipples Rear Axle 12mm Thru x 148mm Rim Width (Internal) 30 Cassette Body Type Shimano Micro Spline Valve Presta Color Black Wheel Size 29" Defined Color Black ISO Diameter 622 / Road / 29" Tire Type Tubeless Ready Clincher Rim Material Carbon Hub/Brake Compatibility Center-Lock Disc

Pressure Relief Valve upgrade kits available

The cutting jaws are self-opening and ready for years of service

Selle Italia SLR Advan Opal S3 Steel Rails White MFPN=064A521REC004 Upper material is made ofTubular steel rails and shock absorbers, offers durability and comfort in a lighter design Crafted with quality materials and a compact silhouette, this saddle enhances performance for endurance rides and race events The innovative PU and production processes ensure a lightweight construction without compromising quality L3 and L1: Wide intertrochanteric distance and high pelvic rotation (Flow and SuperFlow saddles) S3 and S1: Narrow intertrochanteric