[1] Hardtail and Full Suspension bikes but with 29-inch wheels (larger than the standard, which is 26-inch) [2] The larger wheels roll over obstacles better and provide additional traction [3] All-around and cross-country use [0] 
29er
T y p e
R i g i d
F r o n t S u s p e n s i o n
F u l l S u s p e n s i o n
D i r t J u m p i n g
F r e e r i d e
A l l M o u n t a i n
D o w n h i l l
2 9 e r
S i n g l e s p e e d