Track trousers

• Trouser front2×, 36 by 108 cm
• Trouser back2×, 47 by 111 cm
• Ankle cuff2×, 27 by 16 cm

• Waist76.0 cm
• Hip101.0 cm
• Waist to hip21.0 cm
• Crotch depth26.9 cm
• Side length (waist to floor)106.2 cm

• Seat ease14.0
• Crotch depth ease3.0
• Length adjustment-4.0
• Knee width48.0
• Hem width (above cuff)30.0
• Waist casing4.0
• Ankle cuff height7.0

• Finished seat115.0
• Crotch width21.7
• Inseam back − front0.1
• Side seam back − front0.4
• Waist elastic68.4
• Trouser length106.2
• Ankle cuff25.5

1. Cut and markCut every piece with the grain arrow parallel to the selvedge. Transfer the notches and the marks with tailor's chalk or a short snip into the seam allowance.
2. Set up for stretchUse a ballpoint or stretch needle and a narrow zigzag or the stretch stitch, or an overlocker. Seams in knit must stretch with the fabric.
3. Side seamsSew the side seams of each leg, front to back.
4. Inside legSew each inside leg seam.
5. Crotch seamTurn one leg right side out, slip it into the other and sew the crotch seam in one curve. Stitch it twice; it carries the most strain.
6. Waist casingMake two buttonholes at the centre front for the drawstring. Fold the casing down and stitch, leaving a gap to thread the elastic and cord.
7. Ankle cuffsJoin each cuff into a ring, fold it in half and sew it to the leg, stretching the cuff to fit.

• 110 cm wide2.5 m
• 140 cm wide1.8 m
• 150 cm wide1.7 m

Estimated from the pieces laid out with seam allowance, grain along the selvedge. Add more for matching checks or stripes. The editor shows the layout.