The maximum user weight capacity is limited to 170 kg and Hydrow's rail is tested for users with up to a 92cm inseam.
There is no minimum size, weight, or build for using Hydrow. It's one of the most versatile pieces of fitness equipment for smaller or younger athletes. However, the Minimum age for use is 13 years.
Note: Use of the Hydrow by anyone under the age of thirteen (13) is not permitted.