Thelon 2-Piece Swim Set

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The Thelon 2-Piece Swim Set includes a slim-fitting swimming Shirt/Rashguard that features contrasting panels on the side and upper chest and the option of short sleeves with wide cuffs or long sleeves with a unique angled stripe, and coordinating knee-length swim Jammers with side panels and a saddle gusset.

This Set is also available to purchase as swim separates.  Buy only the Thelon Swim Shirt, or the Thelon Swim Jammers.

This is a non-gendered pattern including a new EXTENDED size range, from kids size 2-10 plus four additional teen/tween sizes.  And optional shelf bra is included in the swim shirt/rashguard in the upper size range.

Recommended Skill Level - Beginner-Intermediate - Experience sewing with stretch fabrics is recommended.

Seam allowance is 3/8"(1cm) unless stated otherwise in the pattern, and is included in all measurements.

Required Supplies: sewing machine, stretch needle, 3/4" elastic for waistband and the optional shelf bra, ballpoint pins or wonder clips, scissors and/or rotary cutter, measuring tape and/or cutting mat & ruler.
Suggested Fabric: Swim knit with minimum 60% stretch (fabric content 18%-20% spandex/Lycra), swim lining for the Jammers and the optional shelf bra.  


Included in the pattern:
  • EXTENDED SIZES!  Size range includes 2, 3, 4, 5, 6, 7, 8, 10, A, B, C, D (tween/teen sizes).
  • Cutting charts & pattern pieces for all rectangular parts.
  • Easy to assemble pattern pieces.
  • Clear and efficiently nested pattern pieces, color coded by size.  All colors also print clearly in black ink.
  • No layers (individual size printing) on print-at-home or Large Format; Layers ARE included on Projector Files.
  • All measurements in both metric and imperial
  • Sizing guide including body measurements to help obtain the proper fit for the child. 
  • Specific instructions on customizing & blending sizes.
  • Line drawings showing all options.
  • Interactive table of contents, for reference and ease of use on digital devices.
  • Fabric requirements for all parts.
  • Supplies and suggested fabrics list.
  • Full color photo tutorial with written (English only) details for each step.
  • Hints and tips throughout the tutorial.
  • Summary of steps for quick reference.
  • Modeled photos showing the finished options.

Purchase also includes AO Large Format PDF for copy shop printing, and Projector optimized file.  Print-at-home and Large Format files have nested pattern pieces (no layers); Projector file has layers (ability to turn on and off individual projected sizes), optional "unfold" layer for Cut-on-Fold pattern pieces, & inverted black-background section which also includes mirrored pattern pieces.

NOTE: This product is a sewing pattern, not a completed garment.

3 Reviews Hide Reviews Show Reviews

  • 5
    Thelon 2-piece swim set

    Posted by Varna on 2022 Jun 26th

    This is a "must have" pattern for all of you swim and athletic needs. depending on the fabric you choose, it can be a workout set, or a rash guard, or a swim top & bottom or hack it for a swim dress like I did for my modest granddaughter. She was very pleased with the optional shelf bra she said, "It helps me not be so self-conscious".

  • 5
    Love it!

    Posted by Karen Weber on 2022 Jun 25th

    This set is super cute! The instructions are fantastic. I love how Heidi includes tips and tricks for a better sewing experience.

  • 5
    Awesome look

    Posted by Marianne on 2022 Jun 25th

    Can't wait to sew it