Ridley Helium SLA 105 mix Road-STW Bicycle in 51, 54, & 57 cm Frames

Pro: simple and effective frame shape, fairly light and stiff, around 18lb for size S without pedal. Quality is very good also, all welds are finished up nicely.Con: frame size and shape designed for pros, might no be as easy to ride vs adventure/ touring bike.Important: Size on amazon are for US frame size (seat post length), a 51cm small is really a 54 accordingto manufacture. if you are in between sizes, i'd pick the smaller size just to be safe.