| 摘要 |
A hand-toboggan to accommodate a seated or kneeling rider and having a bottom surface with a longitudinally extending medial portion and two opposite flanks upwardly and outwardly inclined from the medial portion, a pair of parallel longitudinally extending ribs bordering the medial portion, and a plurality of parallel inwardly curving ribs on each of said flanks to enable the rider to turn the toboggan in whichever direction he should lean. |
