| Smart Sole 3 Specs | Smart Sole 4 Specs | |
| Loft | 42, 58 degrees | 42, 50, 58 degrees |
| Lie | 66, 64 degrees | 66, 64 degrees |
| Length | 34, 35.25 inches | 34, 35.25, 35.5 inches |
| USGA Legal | Yes | Yes |
Loft: Cleveland Smart Sole 3 vs Cleveland Smart Sole 4
The first difference between The Smart Sole 3 in Smart Sole 4 is that the Smart Sole 4 has an additional loft option. Both clubs have 42° and 58° options, but the Smart Sole 4 has a 50° option which is not available with the Smart Sole 3.
This means that if you are looking to purchase one of these clubs with a 50° loft, then you will only be able to purchase the Smart Sole 4. If you were looking at other options such as the 42° or the 58° loft, then either one of these clubs are suitable for your needs.
Lie: Cleveland Smart Sole 3 vs Cleveland Smart Sole 4
One similarity between these two clubs is the lie options. Both have 64° and 66° lie options. These lie options are pretty standard for clubs like these. You will likely find that similar clubs are for similar degrees of lie (within 1 degree or so)
Regardless of which one you end up deciding to use, you will be given the same exact lie options.
Length: Cleveland Smart Sole 3 vs Cleveland Smart Sole 4
Another slight difference between the Smart Sole 4 and Smart Sole 3 is the amount of length that the clubs have. The Smart Sole 4 and Smart Sole 3 both offer 34 and 35.25 inch options.
However the Smart Sole 4 has a 35.5 inch option. So, if you typically use longer clubs, or are used to 35.5 inches, then the Smart Sole 4 will be better for you. Otherwise either club is a good option.
Something to note is that the USGA has a 46 inch limit on golf clubs. If any golf club is more than 46 inches long that is considered illegal. Neither the Smart Sole 3 nor Smart Sole 4 exceed this limit.
USGA Legal: Cleveland Smart Sole 3 vs Cleveland Smart Sole 4
Is important to know whether or not the clubs you’re looking at are considered legal. The USGA has very strict equipment rules. All clubs must abide by these equipment rules otherwise they will be considered illegal. According to the USGA, both the Smart Sole 3 and Smart Sole 4 are legal to use in any casual, high-level amateur, or professional golf outings.