650b bikes are becoming ever more prevalent, while 29" bikes, or "29ers" experienced rapidly gaining popularity in the mid to late 2000s, and having some success in cross-country racing, but more so in marathon cross-country. A notable boost to their popularity came with Lance Armstrong, racing and winning on a Gary Fisher 29er.[4] Advantages to the larger wheel formats are less need for suspension due to a decreased angle of attack, and also less loss of momentum.