October 27, 2026
A fit frame is your shoe with windows cut out: a low rim around the sole, a heel cup, and straps over the toes, the ball and the top of the foot. Fit frames use about a quarter to a third less TPU than shoes. In step 3 "What to make", choose "Fit frames". Print them, put them on and stand up.
Check four spots: the toe room, the ball of your foot, the top of your foot and the heel. On the last step, open "More adjustments" and change the spot that is wrong, in steps of 2 mm. Press "Make again", then print new fit frames or your shoes.
heelo uses your side photo to set the height over the top of your foot and over your big toe. In step 1, choose "A tracing of my feet" to add a side photo.
When the whole shoe is too long, too short, too narrow or too wide, go back to step 2 "Your feet" and check your size and width.
Bought your design? Re-fit it for free. For 12 months after you buy, you can re-fit your design for free on the My shoes page when your foot length is within 10 mm of your first fit. Sign in on My shoes and press "Re-fit for free".