Serfas Dual Density Women's Cruiser Saddle 90-Day Comfort Guarantee on all saddles Patented I.C.S. Infinite Comfort System RX & Deep Groove designs Dual Density base technology Dual Density Base. Patented ICS Comfort System. Dual Elastomer Springs. Steel Rails, Weighs 676 grams & 243mm X 205mm. Soft Lycra Cover & Reinforced Rear Bumper.