the valve core is removable so you can refill your sealant through the valve stem

and they work wonders for reducing hand and arm fatigue

The CrMo Duster MTN saddle is built with a mid-density EVA foam

Mount Type: Bar mounted for the front and seat post or frame mounted for the rear via a stretchy rubber strap

Hard or soft

Ergon SM E-Mountain Core Prime Women's MTB Saddle - Stealth Black - Cr-Mo Rails - M-L 160mm - Stealth Black - Cr-Mo Rails - M-L 160mm Virtual Parent the valve core is removableBringing enjoyment to every trail for e mountain bikers. The unique Ergon Core 3D saddle technology combines comfort and optimum power transfer to the pedals. Rides with long uphills? Just stay seated. The rear ramp provides stability and support. Feelings of numbness? Forget it. The male problem zones are relieved. Back problems? No problem. Three seals of approval certify the back friendly features. This is our Pain Free Support Formula and