Schwinn Network 1.0 700c Men's 18 Hybrid Bike, 18-Inch/Medium, Grey Schwinn steel hybrid frame with Schwinn suspension fork offers comfortable and efficient riding Micro shift 21 speed twist shifters with Shimano rear derailleur for precise gear shifting Front and rear alloy V brakes stop securely Sofy hybrid seat with springs as well as a suspension seat post for the ultimate comfort Alloy wheels