Put a welt pocket on it! (Tutorial and free pattern)

I just don't like the look of pants without pockets on the back.  Even one pocket is good enough for me, just something to break up the wide expanse of fabric covering my bottom.  But even when pants or shorts patterns don't have this feature provided, you can still add one!  There are tons of different pocket styles to chose from, but I like welt pockets since they look professional and match the styling of a wide range of pants/ shorts designs.

Peek at my newest pair of pants

In this tutorial, I will be walking through sewing a welt pocket using a basic pants pattern--one with a single dart at the back waistband, but you can use almost any pants, shorts or skirt pattern.  The welt pockets I'm sewing here are part of my "Manhattan Trousers" by Skinny Bitch Curvy Chick (full post to follow). The welt is sewn in before any side or inseams are sewn, so you'll have to plan ahead a bit.  I like my welt pockets to be about 2" below the waistband seam (measured from sewn waistband to top edge of welt), positioned over the very tip of the back dart.  I actually use the vanishing point of the dart to position the lower stitching line of the welt pocket opening, so it's important that the dart be the right length (3", measured from the raw edge).  The Manhattan trouser dart is slightly longer, so I reduced the length and width slightly and distributed the rest of the dart intake to the center back and side seam.

Original back dart and seams

Redrawn dart and side seams

If you want your welt pocket lower (more than 2" below sewn waistband), the dart length and Pocket Back pattern piece should be increased by the same amount.  For example, if you want your welt edge to be 3" below the waistband, make your dart 4" long and your Pocket Back piece should have 1" added to the upper edge.

Okay, now for the welt.  The fairly standard welt pocket size is about 1/2" x 4.5".  If you are very small or very large, you may want to decrease or increase the width to keep the proportions, but for the majority of folks, this size should be fine.

Download the welt pocket pattern.  (For printing, be sure to unselect "Fit to Page".)

Cut out, interface, and finish the edges of the Welt Facing piece.  Then, using pins and the pattern as a template, mark ends of the dotted lines (the location of the four corners of the welt pocket "window"). Then, draw two parallel lines connecting the dots, making sure the lengths are exactly 4.5".  (Note: the solid line rectangle below indicates the part of the facing that is going to show through the welt "window", the welt itself, for purposes of pattern matching.)

Mark ends of dotted lines with pins

Use pins to mark the wrong side of the welt facing

Two parallel lines (4.5") connecting top and bottom corners

Fold the facing in half to create a reference line and place a pin at the intersection point of the midline and the lower of the two parallel lines.    On the right side of your pants back, position the welt facing at the very tip of the dart (using your pin), keeping the midline point in line with the dart.  You may want to interface the pants (on the wrong side) where your welt will go (I did not to reduce bulk).

Right sides facing, align the middle of the welt facing with the back dart

Pin used for reference at the corner of midline and bottom drawn line.

Pin helps align that point to the bottom of the back dart

Pin in place

Carefully stitch along your marked parallel lines, starting and stopping (with backstitching) at the exact same points for both lines.  

Stitched lines, stopping at the same point to create equal length seams.

Fold the welt facing in half and carefully make a small cut between the two lines of stitching.  Open up the piece and extend the cut line in both directions until about 3/4" from the ends of the stitching lines and cut a V toward the "corners".  Slit as close to the stitching as possible without cutting the thread.

Cut a small starting point, then open the slit further.

V notch at the ends of the welt opening.

One at a time, fold the upper and lower flaps of the welt facing over the opening and press to flatten the seam.  (Only the top flap is folded here).

Pressing the seams open helps create the window in the next step.

Push both flaps through the window toward the wrong side of the pants.

Pushed through to the back side

Manipulate the facing so that it lays flat and even around in the opening and press in place.  

Don't be confused, the pants are upside down here!

Now the welt facing creates the welt!  Fold the bottom flap upward, enough to match the top edge of the window.  Flip to the front to make sure the welt is even (1/2" in width), then press in place.

The pants are still upside down, the bottom flap is being folded.

Close-up to show the fold from the side

With pants right side up, fold the side of pants toward the center to reveal the tiny little triangle created by the V notch.  This must be stitched down to secure the sides of the welt and structure the pocket. Stitch through the triangle and folds of the welt facing, as close to the fold line as possible without stitching over it.  Repeat on the other side.

Fold side of pants over to reveal the wrong side of the welt facing

Stitching on the welt facing side

Stitch in the ditch along the lower edge of the welt to keep the welt in place.

Cut the Pocket Front piece out of lining fabric.  Position the top side of the pocket front to the bottom of the welt facing, right sides facing.  Sew with 1/2" seam allowance and press the pocket from downward.

Pocket front aligned with the bottom of the welt facing.

Pocket front pressed downward

Cut the Pocket Back from self fabric.  Position the piece over the welt facing/ pocket front, matching bottom and sides.  If the top hangs over the waistline, trim it off to match the waistline.

Pocket back over the welt facing/ pocket front

Pin the pocket back in position and carefully flip the whole thing over so the pants are right side up. Fold down the pant waist to reveal the welt facing and top of the pocket back. Stitch  through the welt facing and pocket back along the welt facing close to the fold line to stabilize the pocket and attach the welt window to the pocket back.

Pants are folded back to reveal the wrong side of the welt facing and pocket back

Stitch close to the original upper "window" stitching line

Seam or serge around three sides of the pocket, making sure to catch all the pocket layers and not the pants piece.

All pocket layers pinned in place

Serge around three edges

Baste along the upper edge and continue on with the rest of your pattern!

Good luck and let me know if you have any questions!