Bra size chart

Size	Weight(lbs)	UK Size Equivalents
S	75-95	32A, 32B, 32D, 34A
M	95-110	34B, 34C, 34D, 36A
L	110-125	36B, 36D, 38A, 38B
XL	125-140	38C, 38DD, 40A, 40B
2XL	140-160	40C, 40DD, 42B, 42C
3XL	160-185	42D, 42DD, 42E, 44B
4XL	185-205	44C, 44D, 44DD, 46C
5XL	205-240	46D, 46E, 46F, 48B

Check Your Bra Size

• Look at the tag on your current bra (e.g., 36E, 38C, etc.).

2. Match with the Chart

• Use the table above to find the size that includes your cup and band (e.g., 36E → XL).

3. Use Your Weight as Backup

• If you’re between two sizes, check the weight column for extra guidance.

• Example: If you wear 36D and weigh 130 lbs, choose XL.

4. When in Doubt, Size Up

• For more comfort and flexibility, it’s better to choose the larger size.

The FirmFlex

Push past limits without compromise. The FirmFlex Support Sports Bra is engineered with our exclusive FirmFlex™ technology to give you the confidence and comfort you need during every workout.

✔ High-Impact Support – Whether you’re running, lifting, or smashing a HIIT session, the FirmFlex keeps everything secure with bounce-reducing compression and a supportive cross-back design.

✔ Adjustable Fit – Featuring a fully adjustable band and straps, this bra molds to your body so you’ll always have the perfect fit.

✔ Easy On & Off – The front zip closure means no more wrestling with your sports bra post-workout.

✔ Breathable & Sweat-Wicking – Premium performance fabric keeps you cool, dry, and focused, no matter how intense the session gets.

✔ Everyday Comfort – Designed for training but comfortable enough to wear all day, the Lucia gives you style, support, and freedom in one.

💪 Why choose FirmFlex?
Most sports bras compromise between comfort and support — FirmFlex doesn’t. With all-day wearability, a secure fit, and a sleek athletic look, it’s your new go-to for confidence inside and outside the gym.

Frequently Asked Questions

Why might I choose this sports bra over a regular one?

High-impact sports bras like this one are specially built to minimize bounce—critical for preventing discomfort and long-term risks during high-intensity workouts. With features like strong adjustability, moisture-wicking fabric, and a snug, styled design, FirmFlex enhances performance and comfort.

Is the FirmFlex Bra true to size?

Yes — the FirmFlex Sports Bra is designed in UK sizing with an adjustable band for flexibility. If you’re between sizes, we recommend choosing the larger size for comfort.

Will it prevent bounce completely?

No sports bra can eliminate movement 100%, but the FirmFlex high-support design significantly reduces bounce, making it ideal for running, HIIT, and other high-impact training.

Do you have a money-back Guarantee?

If for any reason, you aren't 100% happy with your order, we'll do absolutely everything in our power to make it right.

We're offering a 30-day money-back guarantee, so you can comfortably try your purchase risk-free. If it doesn’t meet your expectations, simply return it within 30 days for a full refund—no questions asked.

Your satisfaction means everything to us, and we’re here to ensure you have the best possible experience.

Customer Guarantees

30-Day Money Back Guarantee 💰🔄 – If you’re not 100% satisfied with your purchase, simply return it within 30 days for a full refund. No hassle, no stress.
Quality Check ✅🔍– Every item goes through a careful quality inspection before it reaches you, ensuring it meets our high standards.
Free Delivery 🚚✨– Enjoy fast and reliable delivery at no extra cost — because great service should never come with hidden fees

Click HERE for more info on our guarantees.

Item added to your cart

FirmFlex™ - High Support Sports Bra