Constructed entirely from carbon fibre

Works great for 10 or 11 speed

Wolf Tooth has improved tactile feedback

X-SYNC 2 and DUB Technologies

it's likely coming from the tiny gaps around under your seat clamp

SDG Bel-Air 2.0 Saddle - Perforated Black - Silver - Performance - Cr-Mo Rails eBay Constructed entirely from carbon fibreThe Bel Air 2. 0 is a practical and comfortable saddle that's ideal for Road, XC, Endurance, and CX riding. Features: Timeless design for all day comfort Rear Rise Platform: Provides enhanced pelvis rotation and power from a standard position Down Curved Nose: Aids in climbing and prevents snagging Peri Canal: Continuous relief channel from tip to tail Down Curved Nose: Aids in climbing and prevents snagging Light Weight EVA Foam 1pcs Seamless