Flow State™ Sustainable Cross Back Sports Bra
Quick Fit takes under 30 seconds. No photo required.
Why shop with us
Free UK standard delivery
On all UK orders
Delivery information
Frequently Asked Questions
What makes this product sustainable?
This product is made using certified recycled materials, helping to reduce waste while delivering premium performance and comfort.
Do you really plant a tree with every order?
Yes. Through our partnership with Ecologi, we contribute to global tree planting projects with every order.
Why choose Sleepy Sloth over larger activewear brands?
Sleepy Sloth combines premium comfort, thoughtful design and sustainability. As a UK ethical activewear brand, we use quality materials, support environmental initiatives and focus on creating activewear women genuinely love to wear.
How do I choose the right size?
Our activewear is true to size. If you’re between sizes or prefer a more compressive fit, check our size guide for detailed measurements.
What do the fabrics feel like?
Our fabrics are selected for comfort, softness and performance, offering a smooth feel against the skin with four-way stretch.
Can I wear these for more than just workouts?
Absolutely. Sleepy Sloth activewear is designed for yoga, Pilates, walking, gym sessions and everyday comfort.
How do I wash my activewear?
Wash at 30°C and avoid fabric conditioner to help maintain performance and longevity.
How long does delivery take?
We dispatch orders from the UK, with delivery times shown at checkout and in our shipping policy.
What is your returns policy?
If you’re not completely happy with your order, you can return eligible items in line with our returns policy. Customers are responsible for return shipping to us. For international orders, if a replacement or exchange is required, customers are also responsible for the shipping cost for us to send the new item back to them.
Certified sustainable
Flow State™ Cross Back Sports Bra
High support meets buttery soft. The sustainable sports bra your wardrobe needs.
The Flow State™ Cross Back Sports Bra is designed for women who want it all, serious support, a beautiful design, and fabric that's kind to the planet. The multi-strap cross-back design gives you both stability and elegance, while the seamless buttery-soft construction keeps you comfortable through every session.
Made from 62% recycled nylon and 38% spandex and crafted without PFAS, it's high-performance activewear with a low-impact footprint. Perfect for yoga, Pilates, Hyrox, and everything in between. Pair with the Flow State™ Leggings or Shorts for a complete sustainable matching set.
Key Features & Benefits
- Multi-strap cross-back design — stylish, supportive and secure
- High support for flow-based and high-intensity movement
- Buttery soft second-skin feel from the first wear
- Seamless construction, minimises irritation for all-day comfort
- Breathable, lightweight and 4-way stretch
- Made from 62% recycled nylon and 38% spandex
- Made without PFAS — kinder to your skin and the planet
- Available in Forest Green, Navy, Black, Peacock Green, Battleship Gray & Chocolate Brown
Ideal For
Yoga · Pilates · Strength & mobility training · Hyrox · Gym workouts · Everyday activewear
Why the Sleepy Sloth Community Loves Us
Every purchase supports:
- 🌳 Tree planting with Ecologi
- 🦥 Sloth conservation in Costa Rica
- 📦 Biodegradable, low-impact packaging
Feel good, move better — wear with purpose.
Care Guide
- Wash inside out at 30°C or colder
- Air dry only — do not tumble dry or iron
- Avoid fabric softeners and harsh detergents
- Wash with similar colours
Complete the Set
Build the full Flow State™ look with matching pieces from the same activewear capsule.
Fit & Sizing
- True to size with high support
- Most customers choose their usual size
- Designed with flexible stretch fabric for a supportive fit across multiple cup sizes
- Model is wearing size Small, 5'4", 55.8 KG
Important
These are garment measurements taken unstretched - compare them against an item you already own and love.
| Size | Length | Bust | Underbust | Cup Size |
|---|---|---|---|---|
| XS (6) | 25 | 60 | 56 | A |
| S (8) | 25 | 64 | 60 | A-B |
| M (10) | 25 | 68 | 64 | B-C |
| L (12) | 25 | 72 | 68 | C-D |
| XL (14) | 25 | 76 | 72 | D-DD |
A. Length
Measure from the highest shoulder point to the bottom hem.
B. Bust
Measure across the fullest part of the bust.
C. Underbust
Measure around the ribcage directly under the bust.
Free UK Standard Delivery
Free UK standard delivery on all orders. Express upgrade available at checkout.
Reliable Dispatch
Orders are dispatched within 1–3 working days.
Ethically Made
Recycled, responsible production
Movement-Ready Fit
Support and comfort you can trust.
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Important
These are garment measurements taken unstretched - compare them against an item you already own and love.
| Size | Length | Bust | Underbust | Cup Size |
|---|---|---|---|---|
| XS (6) | 25 | 60 | 56 | A |
| S (8) | 25 | 64 | 60 | A-B |
| M (10) | 25 | 68 | 64 | B-C |
| L (12) | 25 | 72 | 68 | C-D |
| XL (14) | 25 | 76 | 72 | D-DD |
A. Length
Measure from the highest shoulder point to the bottom hem.
B. Bust
Measure across the fullest part of the bust.
C. Underbust
Measure around the ribcage directly under the bust.