Loading...
SportFlex MD – Gravity
SportFlex is built to handle training, travel, and everything in between. Its smooth, durable silicone resists water, dirt, sweat, and stains, while the adjustable fit and breathable design keep you comfortable through every move.
£49.00
Back in stock: 31/05/2025
Buy now, pay later from £12.25/mo with
Free UK shipping over £50, free returns.
Key Benefits
-
Waterproof, sweatproof, and dirtproof.
-
Soft-touch, ultra-smooth silicone.
-
Adjustable and breathable.
-
Fast Link™ slider for easy swaps.
-
ECG-ready with WHOOP Life.
SportFlex is built to handle training, travel, and everything in between. Its smooth, durable silicone resists water, dirt, sweat, and stains, while the adjustable fit and breathable design keep you comfortable through every move.
BUILT FOR HIGH PERFORMANCE – SportFlex is designed with waterproof, sweatproof, and dirtproof silicone. It’s highly durable and designed to withstand your most intense workouts and adventures.
MADE WITH SOFT-TOUCH SILICONE – SportFlex is ultra-smooth, hygienic, and easy to clean. Small scuffs can be wiped off, or you can deep-clean the band with isopropyl alcohol and a lint-free cloth followed by a water rinse.
ADJUSTABLE AND BREATHABLE – SportFlex is made with an adjustable closure system to ensure a snug, secure fit—no matter how intense your workout. The band includes ventilation details, making it extra breathable and comfortable.
100% WATERPROOF – SportFlex is completely waterproof, making it an essential accessory for everything from swimming laps and surfing to high-sweat, high-intensity workouts.
OPTION FOR ECG COMPATIBILITY – With a WHOOP Life membership, choose a SportFlex band to take on-demand ECG readings.
Includes a Band, Hook, Clasp, and a Fast Link™ slider that makes swapping bands easier than ever. Compatible with WHOOP One, WHOOP Peak, and WHOOP Life—membership not included.
Disclaimers:
_WHOOP is not a medical device and should not be used to diagnose, cure, mitigate, manage, treat, or prevent any condition or disease. WHOOP should not be used in place of a medical device. WHOOP does not provide medical advice and is not a substitute for advice from your doctor or other medical professionals. If you have any health-related questions, please see your healthcare provider. You should never disregard medical advice or delay in seeking medical advice because of information from WHOOP. All content is for general informational purposes.
Blood Pressure Insights: Blood Pressure Insights is not a medical device and cannot diagnose or manage medical conditions. It does not provide medical advice. Always consult your doctor for health concerns and never delay or modify medical care based on its information.
ECG: This feature is not intended for users with known arrhythmias other than AFib or users under 22 years old. It is not recommended for users with a cardiac pacemaker, ICDs or other implanted electronic devices. This is a medically regulated feature and is not currently available in every region. Find out if it’s supported in your region here.
Healthspan: This feature is not available for users under the age of 18. This feature is for wellness purposes only and not for medical use.
Waterproof: IP68 water-resistant up to 10 meters for 2 hours._ Waterproof: IP68 water-resistant up to 10 meters for 2 hours.
WHOOP was founded in 2012 by Will Ahmed, then a Harvard student athlete, who was determined to enhance his training and recovery. After reviewing over 500 medical papers, Ahmed discovered that continuous monitoring of metrics like heart rate and variability could significantly boost performance and wellbeing. This insight led to the creation of WHOOP, a groundbreaking wearable that provides unparalleled visibility into how sleep, strain, and recovery impact overall health and performance.
From its beginnings with elite athletes like LeBron James and Michael Phelps, WHOOP has revolutionised the understanding of human physiology. The company's mission is to unlock human performance by offering deep insights into the body’s functions and helping users achieve their highest potential physically, mentally, and emotionally. WHOOP’s relentless pursuit of understanding and optimising human performance continues to drive its innovation and impact.
Here at Healf we do the work for you, every product goes through a 3 step curation process of Discovery, Expert Validation, and Community Testing. So you know you are only getting the best.
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
You may also like
Shop by collection
Frequently asked questions
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
New
New
Translate your body’s data
into a personalised
wellbeing plan.
Learn more
Healf Curation
Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
Discover more
The Discovery
Expert Validation
Community Testing