Bali
Stretch swim trunks with a lined front gusset for comfort, side-seam construction, and a soft fold-over elastic waistband finished with a twin-needle hem.
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3 – 8 yrs Sizes included
25–30 cm Main fabric, by size
23–27 cm Lining fabric for gusset
2 cm Elastic width for waistband
Pattern descriptionComfortable swim trunks, ready for the water
These boys' swim trunks are built from a front and back leg piece plus a side part on each leg, with a lined gusset for comfort and a soft fold-over elastic waistband — no zippers or closures needed.
Sized from 3 to 8 years (98–128 cm height).
MaterialsWhat you'll need
Suggested fabrics
For swimwear, we recommend fabric mostly made from nylon, with at least 10–20% Lycra or spandex. Polyester blends with the same percentage of spandex also work well.
For sewing, use special needles marked STRETCH 65.
Also needed
- Lining fabric for the gusset
- Elastic tape for the waistband — 2 cm wide
- Threads to match the fabric
- Seam allowances are already included on every pattern piece
Fabric consumption
Tap a size to see it highlighted across the table. Values shown in cm / in.
| Height (cm) | 98 3 y | 104 4 y | 110 5 yMOST PICKED | 116 6 y | 122 7 y | 128 8 y |
|---|---|---|---|---|---|---|
| Main fabric | 25 cm 9.8" | 25 cm 9.8" | 27 cm 10.6" | 29 cm 11.4" | 30 cm 11.8" | 30 cm 11.8" |
| Lining fabric | 23 cm 9.1" | 24 cm 9.4" | 25 cm 9.8" | 26 cm 10.2" | 27 cm 10.6" | 27 cm 10.6" |
When buying fabric, keep in mind that the material can shrink, so take a margin of 5–10%.
Cutting listSpecification
| Pattern piece | Pcs. |
|---|---|
| Main fabric | |
| 1 — Back pant leg | 2 |
| 2 — Front pant leg | 2 |
| 3 — Side part | 2 |
| Lining fabric | |
| 4 — Gusset | 2 |
| Support pattern | |
| 5 — Elastic into the waistband | 1 |
Attention! All our patterns already contain 1 cm / 0.39" seam allowances.
Step by stepSewing instructions
Description of tailoring
14 steps- 1
Cut out the swimming trunks details from the main fabric. Cut out the gusset from the lining.
- 2
Serge the outer curved edge of the gusset details. Press.
- 3
Pin the gusset details together with the right sides along the inner curved edges (crotch). Serge it.
- 4
Pin the back details together with the right sides along the crotch and serge it. Pin the front details together with the right sides along the crotch and serge it.
- 5
Pin the side details to the back with the right sides together, aligning the notches. Serge it.
- 6
Pin the side details to the front with the right sides together. Serge it.
- 7
Pin the front and back together along the inseam with the right sides. Pin the gusset to the inseam with the right side to the wrong side of the back. Serge it.
- 8
Press the gusset to the front.
- 9
Pin the gusset to the front upper hem and baste it.
- 10
Stitch the elastic into a ring.
- 11
Pin the elastic to the upper hem of the garment (to the wrong side).
- 12
Serge it.
- 13
Fold the elastic inward and pin. Sew in place using a twin needle.
- 14
Fold the bottom hem of the trunks and pin, making sure the gusset is pinned to the front. Sew in place using a twin needle.
Finishing The swimming trunks are ready!
