Girls Activewear Leggings – Bella
Coverage & Comfort for Active Tween Girls
Designed to feel right now. Not to rush what comes next
Free Shipping over $89
30-Day Free Returns
Free shipping on orders over $89. Otherwise, $10 for standard shipping and $15 for express (Australia only).
Orders are dispatched within 1–2 business days, with delivery in 3–7 business days depending on your location and shipping method.
30 days to return or exchange, no questions asked. If the fit isn't right - and with growing bodies, it often takes a try - we'll help you sort it.
Items must be unworn with tags attached.
You’re choosing something considered, not just something new.
Athletik Tween Promise
Designed specifically for girls aged 8–14, Athletik Tween focuses on comfort, coverage and confidence during the in-between years, clothing that supports movement and independence without asking her to grow up too fast.
| Size | 8Y | 9Y | 10Y | 11–12Y | 13–14Y |
| Height | 131cm | 141cm | 148cm | 156cm | 164cm |
| Chest | 68cm | 70cm | 72cm | 76cm | 80cm |
| Waist | 58cm | 60cm | 62cm | 64cm | 68cm |
| Hip | 72cm | 74cm | 76cm | 81cm | 86cm |
Measure the body (not the garment).
If between sizes, we recommend sizing up for comfort.
How do I choose the right size?
We've aligned our sizing with Australian standards, but every girl grows differently, especially in the in-between years. We recommend choosing based on how she likes to feel: snug and supported or a little more relaxed.
What if I'm unsure about sizing?
You're not alone — most mums are navigating this stage too. If you're between sizes or unsure, we suggest sizing up for a longer-lasting fit and extra comfort.
Will it fit as she grows?
Our pieces are designed with flexibility, stretch, and movement in mind, so they adapt to her body and keep her comfortable as she grows and moves.
What if the size isn't right?
We've got you. We offer a 30-day return policy, so if something doesn't feel quite right, you can exchange or return it with ease.
Is it really risk-free?
Yes — completely. No stress, no pressure. Just finding the fit that helps her feel confident, comfortable, and completely herself.
About this product
The best girls activewear leggings for tween girls aged 8 to 14. Designed to stay in place, look great, and feel second-skin comfortable from school to sport and everything in between.
Why tween girls (and their mums) love it
- Recycled polyester/elastane - premium, buttery-soft performance fabric
- 4-way stretch moves in every direction and snaps back instantly - no saggy knees
- Moisture-wicking keeps her dry during training, PE, and active days
- Breathable construction prevents overheating during activity
- Lightweight - feels like a second skin, never heavy or restrictive
- Shape retention - holds its premium look after every wash
- Designed for tween proportions - right waist height, right leg length
- Durable - resists pilling, stretching, and shrinking after frequent washing
Fabric and performance
Made from recycled polyester/elastane, the Bella Legging is engineered for performance activewear. The elastane delivers 4-way stretch that moves with her body and recovers its shape - no more saggy knees at the end of the school day. The recycled polyester wicks moisture away from the skin, keeping her cool and comfortable through every activity.
