The ENVE x Selle Italia SLR Boost saddle brings ENVE's own engineering input into Selle Italia's proven SLR Boost shape, rather than pairing a stock saddle with a logo. This 145mm build rides on oval titanium rails and a Soft-Tek polyurethane cover, the same cover Selle Italia carries into the carbon rail version, which swaps in carbon rails for a lower weight instead. The perforations and branding carry both companies' identity without one overpowering the other. What Our Gearhead(R) Experts Are Saying:"I've had these titanium rails under me through a full season of hard training days, and they never turned harsh the way some race saddles do. That's the flex I want the day after a long ride, not just on race day."