Joma Junior Top and Bottom Size Guide

This size guide covers Joma Junior Clothing — including t-shirts, polos, hoodies, jackets, shorts and tracksuit bottoms. Boost your child's sports performance with Joma's junior collection: a symphony of colours, prints, and unmatched comfort. Designed to provide complete freedom of movement, ensuring a perfect fit that follows every action without restrictions. Lightweight fabrics enhance body adaptability for optimal performance.

Select the correct size using your child's age, height, chest, waist, and hip measurements. Age is shown as a guide only — always use body measurements as children develop at different rates. All measurements are in centimetres.

Shop Joma Boys' Clothing → Shop Joma Girls' Clothing →
How to Measure

Take all measurements directly against your child's skin using a soft tape measure. Age and height are provided as a guide — always use body measurements as children develop at different rates.

  • A
    HeightMeasure your child's full standing height without shoes, keeping them upright against a flat wall.
  • B
    ChestMeasure around the fullest part of the chest, keeping the tape horizontal and snug but not tight.
  • C
    WaistMeasure at the narrowest part of the natural waist, keeping the tape horizontal.
  • D
    HipMeasure around the fullest part of the hips and seat, keeping the tape horizontal.

Age is shown as a guide only. Always use body measurements as children develop at very different rates. If measurements fall between sizes, speak to a member of staff at Allens who will be happy to advise.

Sizing Table — Joma Junior Top & Bottom
Size 6XS 5XS 4XS 3XS 2XS XS
Age (years) 4–5 5–6 7–8 9–10 11–12 12–14
Body Measurements (cm)
Height 100–108 109–117 118–128 129–140 141–152 153–164
Chest 55–57 58–61 62–66 67–72 73–79 80–87
Waist 54–55 56–57 58–60 61–64 65–68 69–72
Hip 60–62 63–65 66–68 69–74 75–80 81–86

Age is a guide only — always use body measurements as children develop at different rates. All measurements are body measurements, not garment measurements. Speak to a member of staff at Allens if you are unsure.

Fit Notes — Joma Junior Clothing
  • Always use body measurements to select the correct size — age ranges are a guide only as children develop at very different rates.
  • Use chest as the primary guide for tops and jackets, and waist as the primary guide for shorts and tracksuit bottoms.
  • If your child's measurements fall between sizes, speak to a member of staff at Allens who will be happy to advise on the best fit.
  • Joma junior clothing is designed for complete freedom of movement — the fit should feel close but never restrictive during sport or exercise.
  • For layering (e.g. t-shirt under a jacket), select the standard size for each layer. Joma's performance fit is designed to work in combination.
  • Joma's lightweight fabrics are designed to enhance body adaptability — garments should feel comfortable and breathable during high-intensity activity.
  • Always follow the care label on the individual garment. As a general guide: machine wash at 30°C on a gentle cycle, do not tumble dry, avoid fabric softeners.
  • Unsure? Contact our team or call +44 1827 330600. Speak to a member of staff at Allens if you are unsure.
Frequently Asked Questions — Joma Junior Clothing

Measure your child's height, chest, waist, and hip using a soft tape measure taken directly against the skin. Age is shown as a guide only — always use body measurements as children develop at different rates. Compare all measurements to the sizing table above and speak to a member of staff at Allens if you are unsure.

Always select by body measurements. The age ranges shown in the table are a guide only — children of the same age can vary significantly in size. Measure your child's height, chest, waist, and hip and compare to the sizing table to find the best fit. If measurements fall between sizes, speak to a member of staff at Allens who will be happy to advise.

Yes — this size guide covers Joma's full junior clothing range, including t-shirts, polos, hoodies, jackets, shorts, and tracksuit bottoms. The same sizing table applies to both tops and bottoms. Use chest as the primary guide for tops and waist as the primary guide for shorts and tracksuit bottoms.

If your child's measurements fall between two sizes, speak to a member of staff at Allens who will be happy to advise on the best fit. As a general rule, for tops size for the chest and for bottoms size for the waist. If in doubt, it is usually better to go to the larger size to allow room for movement and growth.

Yes — Joma's junior clothing range is designed specifically for sport and physical activity. The lightweight performance fabrics provide complete freedom of movement and are engineered to be breathable and comfortable during high-intensity exercise. The range covers all activities including running, football, gym, and general school sport and PE.

The Joma junior sizing range covered in this guide runs from age 4–5 (size 6XS) through to age 12–14 (size XS), covering children aged approximately 4 to 14 years. Age is shown as a guide only — always use body measurements to select the correct size as children of the same age can vary significantly in size.

Always follow the care label on the individual garment. As a general guide: machine wash at 30°C on a gentle cycle, do not tumble dry, do not iron directly on printed or embroidered areas, and store away from direct sunlight. Avoid fabric softeners as these can reduce the breathability and stretch properties of performance fabrics over time.

Joma's junior clothing range is designed for land-based sport and training. It is not designed for use in the pool. For swimming-specific clothing and equipment for children, please browse our junior swimming range at Allens Swimwear.