They say that every journey begins with a single step, but when that journey is related to exercise, that first step can sure be a doozy. It can be life-changing, however, and there's no better machine to take the plunge with than with the Roll. With its lightweight alloy low-entry frame that lets you easily put a foot down when needed, eight speeds of "go fast" MicroSHIFT gearing, stable and wide 650b tires, powerful hydraulic disc brakes, and low-entry design that makes it a easier to get on and off the bike, the Roll does everything in its power to encourage and motivate you to keep fit and get around in comfortable, efficient style. The Low-Entry Roll is made from our A1 Premium Aluminum, and it features our Ground Control Positioning that makes it easy to put a foot down when stopped. This Roll also comes ready with rack/fender mount, making it easy to carry extra weight. Wide diameter, 650b x 2.3" Nimbus II Sport Reflect tires provide excellent traction, stability, and cushioning, which creates a safer, more reliable, and more comfortable ride on either paved or dirt roads. Plus, the reflective accents of the tire increase your visibility to motorists in low-light conditions. Equipped with a Body Geometry Comfort Gel saddle, you can expect a supreme level of comfort anywhere you ride. It is ergonomically designed and scientifically tested to provide unmatched comfort and support while reducing pressure on soft tissue. FrameSpecialized A1 Premium Aluminum, Low Entry , Ground Control Positioning, formed tubes, post-mount disc, fender/rack mountsSeat BinderQuick-release clamp, 31.8mmForkSteel formed tubes, post-mount disc, fender/rack mountsRear BrakeTektro HD-T275, hydraulic disc, 160 mm rotorFront BrakeTektro HD-T275, hydraulic disc, 180 mm rotorCrankset3 pc, Alloy Forged ArmsChainrings40TBottom BracketBSA, square-taper, 68mmChainKMC X8 w/ Missing Link™Rear DerailleurMicroSHIFT Advent 9 Speed, W/O ClutchCassetteMicroSHIFT, 8-Speed, 12-42tShift LeversMicroSHIFT, 8-speedRims650b disc, double-wall alloy, pinned, 32hFront HubAlloy, 6-bolt disc, loose ball bearing, quick-release, 32hFront TireNimbus 2 Sport, 650Bx2.3Rear TireNimbus 2 Sport, 650Bx2.3Rear HubAlloy, 6-bolt disc, Shimano, 8/9-speed freehub, 135mm spacing, quick-release, 36hSpokesStainless, 14gInner TubesStandard 48mm SV 27.5X1.75/2.4Stem3D-forged alloy, 31.8mm, 7-degree riseGripsSlip-on, Closed End GripsSaddleSpecialized Body Geometry Comfort GelHandlebarsSpecialized Roll, 6061 alloy, Double butted, 15-degree backsweep, 136mm rise, 31.8mmSeatPostSpring suspension, alloy, 27.2mm, 2-bolt clampPedalsSpecialized, platformWeight13.65 kg (30 lb, 1.5 oz) - Size MD