Marin Four Corners Sizing Chart
| Size | Rider height range |
| XS (650B) | 4'11" - 5'3" |
| S (650B) | 5'2" - 5'6" |
| M (700C) | 5'6" - 5'10" |
| L (700C) | 5'10" - 6'1" |
| XL (700C) | 6'1" - 6'5" |
| Size | Rider height range |
| XS (650B) | 4'11" - 5'3" |
| S (650B) | 5'2" - 5'6" |
| M (700C) | 5'6" - 5'10" |
| L (700C) | 5'10" - 6'1" |
| XL (700C) | 6'1" - 6'5" |