messydays
MessyDays Performance Sport Tee
MessyDays Performance Sport Tee
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A lightweight sport tee for older kids who play seriously — school sport, weekend games, and everything in between.
Made from 90% Polyester and 10% Spandex at 160 GSM, the Performance Sport Tee is finished with KOOLTEX — a specialist cooling and performance finish applied to the fabric. At just 160 GSM, it's the lightest piece in the MessyDays range. Mesh panels in each colourway enhance breathability in key areas.
- KOOLTEX finish — specialist cooling treatment to help manage heat during physical activity.
- Ultralight 160 GSM — the lightest fabric in the MessyDays range.
- 10% Spandex stretch — unrestricted movement in every direction during sport.
- Mesh panel detail — tonal or contrast panels for additional breathability.
- OEKO-TEX Standard 100 compliant — azo-free dyes, skin-safe pH 4.5–7.0.
Available in Emerald with matching tonal mesh and Pool Blue with contrast white mesh. Sized for children 6–11 years.
Fit & Size
Fit & Size
A close active fit — designed to sit near the body without restricting movement during physical activity.
Available in sizes 6–7, 8–9, and 10–11 Yrs. Use the Size Guide and measure by chest and height. If your child is between sizes or prefers more room, we recommend sizing up.
The 10% spandex gives stretch across the chest and back, so a close fit won't restrict movement during sport.
Fabric & Care
Fabric & Care
Fabric: 90% Polyester / 10% Spandex, 160 GSM with KOOLTEX finish. Mesh panels in matching or contrast colour depending on colourway.
Care: Machine wash cold, gentle cycle. Wash with similar colours. Do not bleach. Do NOT tumble dry — heat damages the spandex content and the KOOLTEX finish. Hang or lay flat to dry in shade. Do not iron. Do not dry clean.
The KOOLTEX finish is heat-sensitive. Air drying is essential to preserve both the stretch and the performance finish.
See our Fabric & Care page for more.
Product FAQs
Product FAQs
What is KOOLTEX?
KOOLTEX is a specialist cooling and performance finish applied to the fabric, designed to assist with heat management and comfort during physical activity. It is the branded finishing technology used across MessyDays' Performance tier.
What age is this designed for?
Available in sizes 6–7, 8–9, and 10–11 Yrs — designed for older children in the MessyDays range who play sport more regularly.
What is the difference between Emerald and Pool Blue?
Emerald has tonal matching mesh panels for a clean, tone-on-tone look. Pool Blue has contrast white mesh panels for a more distinct two-tone finish.
Can this go in the tumble dryer?
No. The spandex content and KOOLTEX finish are heat-sensitive — tumble drying will degrade both over time. Always air dry in shade.
Is this suitable for school PE and competitive sport?
Yes — the lightweight construction, spandex stretch, and KOOLTEX finish make it well-suited for school PE, weekend sport, and outdoor active play.
Returns & Exchanges
Returns & Exchanges
Returns & Exchanges
- Free size or color exchange within 7 days of delivery
- Free store credit, or a refund to your payment method for a small pickup fee
- Wrong or damaged item? Fully free, priority pickup — no exceptions
