Custom Boys' Swim Trunk — UPF 50+ Sun Fabric with Screen Printing
We build boys' swim trunk programmes from a tech pack or a physical reference sample. This UPF 50+ Sun Fabric version is developed for brands that need a repeatable specification: the same cloth, the same hand feel and the same fit on every reorder. Fabric, trims, screen printing and packaging are all specifiable, so the garment stays consistent across seasons and across production runs.
Most buyers come to us after one of these problems: unclear responsibility when a defect shows up after washing, or unclear responsibility when a defect shows up after washing. Our response is to fix the specification first — fabric weight, shrinkage allowance, stitch density and tolerance — before a single bulk metre is cut.

Specification
| Product | Boys' Swim Trunk |
|---|---|
| Base fabric | UPF 50+ Sun Fabric |
| Decoration / finish | Screen Printing |
| Fabric weight | 220-260 gsm |
| Size range | S-4XL |
| Colour options | 6 Pantone-matched shades |
| MOQ | 100 pieces per style per colour |
| Sampling | 10 working days, 4 days per revision |
| Bulk lead time | 18-35 days after approval |
| Compliance | GOTS |
What you can customise
- Ribbed Cuff and Hem — available on UPF 50+ Sun Fabric, quoted per position and per colour.
- Custom Drawcord — available on UPF 50+ Sun Fabric, quoted per position and per colour.
- All-Over Sublimation — available on UPF 50+ Sun Fabric, quoted per position and per colour.
- Yarn Dyeing — available on UPF 50+ Sun Fabric, quoted per position and per colour.
- Satin Printed Label — available on UPF 50+ Sun Fabric, quoted per position and per colour.
- Reflective Printing — available on UPF 50+ Sun Fabric, quoted per position and per colour.
- Snow Wash — available on UPF 50+ Sun Fabric, quoted per position and per colour.

How we produce it
- Tech pack review and fabric confirmation
- Lab dips or print strike-off for approval
- Pattern making, grading and a UPF 50+ Sun Fabric-spec prototype
- Fit sample and wearer test, then a pre-production sample
- Bulk cutting with screen printing applied under controlled settings
- In-line inspection, final AQL 2.5 inspection and packing
Typical applications
- Schools and School Districts — boys' swim trunk uniforms, staff wear or resale programmes
- Railway and Transit — boys' swim trunk uniforms, staff wear or resale programmes
- Boutique and Independent Labels — boys' swim trunk uniforms, staff wear or resale programmes
- Chemical and Oil & Gas — boys' swim trunk uniforms, staff wear or resale programmes
- Golf Clubs — boys' swim trunk uniforms, staff wear or resale programmes

Quality control
Every bulk order is checked against the approved sample for shade, hand feel, measurements and workmanship. We record shrinkage, colour fastness and seam strength on the first bulk lot and hold the data as the reference for reorders, so boys' swim trunk batches stay comparable over time. Inspection photos and the measurement report are sent before the balance payment is due.
FAQ
What file formats do you need for artwork?
Vector files (AI, EPS, PDF) give the best print and embroidery results. For raster artwork please supply at least 300 dpi at the final print size. We digitise embroidery files in-house and return a sew-out photo for approval.
How is shipping handled?
We quote EXW, FOB, CIF and DDP. Consolidated sea freight is the default for bulk programmes, with air or express options when a launch date is at risk.
What is the minimum order quantity?
Standard programmes start at 100 pieces per style and colour. We can split sizes across a size set, and for first orders we often accept a mixed-colour run to help you test the market.
Can you match a specific colour?
Yes. Send us a Pantone TCX reference or a physical swatch. We return lab dips for approval and hold bulk shade within the agreed tolerance band before cutting.
Start your boys' swim trunk programme
Book a 20-minute call with our merchandising team and get a written quotation within 48 hours.







