Serfas TBM 10 Tailbones® Memory Foam Waterproof Saddle BFCM 24 Innovative SCMU bracket makes mounting Innovative SCMU bracket makes mounting and transport a snap Don’t forget to mask any braking surfaces and tyre threads before application About Serfas TBM 10 Tailbones® Memory Foam Waterproof SaddleSerfas' latest addition to the Tailbones® family introduces a top layer of Memory Foam for a more personalized feel and added comfort Serfas Tailbones® saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort