For the record, actual outer diameters of Sunline grips:

Thin logo grips = 28mm

Thick logo grips= 33mm

Big 'S' grips = 31.5mm

Twisted waffle = 31mm

Half-waffle = 31mm

Logo grips in thin are very thin - - too small for even my relatively small hand. Probably be good for a female with average-to-small hands. Even though the thick logo grips are the largest, some complain that, because the rubber compound is so soft, they feel a bit 'squirmy' to them. Although the twisted waffles are the same diameter as the half-waffles, they will feel larger because the rubber is harder and less compliant - - they have a moto compound and were made to give more traction in wet/muddy conditions. The Big 'S' grips give up 1.5mm to the thick logo grips but have an excellent, 'sure' feel. You would have to try them out to see if they are large enough for your hand though.