No, the iWALK crutch is one size fits most. If you are built like 95% of the population the iWALK crutch should fit you. If you are between 4'10 and 6'6", with a thigh circumference under 28", and weigh under 275 lbs you are within the physical requirements, however, it is not that easy. If you are near the lower end or upper end of the height limit it may not fit you.
For more detailed information on whether the iWALK crutch will fit you, check out our website here.
If you are outside the height and weight limits we cannot suggest using the iWALK.
See also:
Can I use the iWALK crutch (qualifications for use)?
Where can I buy the iWALK crutch?