On-Seam Pocket Length And Correct Positioning Along A Garment's Seam

An on-seam pocket is perhaps one of the most functional elements in dressmaking. This pocket style is subtle enough not to visually disrupt a garment's design while adding undeniable comfort and functionality to virtually any clothing item. That being said, comfort and functionality is only viable if the pocket is constructed following the correct pocket opening length and accurate positioning along the seam.

​If you are adding on-seam pockets to a garment sewn at home, here are some basic rules to adhere too:

For optimal function, the pocket opening should not measure less than 5" long. Anywhere from 5"-6.5" is a standard length for an on-seam pocket opening. Anything longer would affect the pocket's functionality both in terms of the items housed in the pocket as well as the ability to comfortably rest your hand in the pocket cavity. 

When positioning the on-seam pocket along the seam, you should test to find the pocket location most comfortable for you. Bring your hand to your side and imitate the motion of placing your hand in the pocket. To find an approximate distance for the pocket placement, measure from the waistline down to this general location. Simply put, your hand should rest comfortably and feel natural when using the completed pocket. Naturally, a placement that is too low or too high along the seam will feel uncomfortable. ​

The pocket position along the side seam is usually measured from the waistline down. In general, if the top of the pocket opening starts anywhere from 3"-6" down from the waist, you should have a fairly comfortable pocket placement. ​