Frequently Asked Questions


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Use & Care

What is TheraFlex™ ideal to use for?

Ideal in providing relief for common conditions caused by repeated overuse or injury in muscles, joints, tendons, ligaments or other soft tissues.(ACL/PCL/MCL/LCL) Common conditions include muscle fatigue/strains, knee sprains, shin splints, arthritis, tendonitis, bursitis, cramps, blood clots, varicose veins, thrombosis, edema, lymphedema, phlebitis, blood stasis/stagnation, etc. Also great to use during pregnancy and post-surgery.

Can I wear these while working out?

Yes! TheraFlex™ is designed to power through a wide variety of physical activity. We highly encourage wearing them while working out and/or recovering.

What types of workout activities can I use these for?

Running, jogging, hiking, walking, biking, swimming, weight lifting, calisthenics, crossfit, martial arts, yoga, dance, gymnastics, ice skating, hockey, soccer, baseball, basketball, football, rugby, volleyball, tennis, pickleball, badminton, ping pong, lacrosse, golf, and many more.

Can it be worn underneath pants or jeans?

Yes, they can be worn underneath loose fitting jeans and slacks comfortably. Each sleeve is 2mm thick.

Can it be worn while sleeping?

We recommend consulting with your physician before wearing while sleeping.

What are the care instructions for washing?

Hand-wash in warm water with light soap. Lay flat and air-dry to ensure long lasting performance.

Size Guide & Specifications

Are these unisex?

Absolutely! Universally designed to fit both men and women of all ages.

What sizes are available?

Small, medium, large, X-large, 2X-large and 3X-large. See size chart below.

How do I measure myself to get the correct size?

Using a measuring tape, measure your thigh circumference 5" inches from the center of your kneecap. If you do not have a measuring tape, you can download and print a measuring tape by clicking this link.

My measurement falls between two sizes, which size should I choose?

Keep in mind that our sleeves work by compression. The tighter the fit, the more compression is applied. If your measurement falls directly between two sizes, we typically recommend ordering the lower size to fully benefit from the effects of compression. If you worry they will be too tight or prefer a looser, less compressed fit, order a size up.

How long are they?

Each sleeve measures approximately 19" inches (48 cm) long.

Do these come in pairs?

Yes! Each order comes in pairs (2 pieces).

What are TheraFlex™ sleeves made of?

A proprietary blend of anti-microbial nylon (75%), spandex (20%), and silicone (5%).

What is the compression rating?

Level 2, 15-20 mmHg compression. The most commonly used level, 15-20 mmHg compression offers moderate compression.

Shipping & Returns

How long will it take to deliver?

3-5 business days for USA orders, shipped by USPS. 7-14 business days for the rest of the world, shipped by DHL. 

Please note: Orders may require more time to be delivered due to USPS limited transportation availability as a result of the ongoing COVID-19 impacts. Rest assured, your order will be processed and shipped asap.

Where do these ship from?

We ship directly from our facility in Phoenix, Arizona USA. Orders outside of North America are shipped from our warehouses in UK and Hong Kong.

What's your exchange/return policy?

We stand behind every product we make. We offer a no-hassle 30 day exchange/return guarantee. Simply send your unused/unwashed item back to us within 30 days of receipt for an exchange or full refund, minus any shipping costs already paid.

Payment & Misc.

What payment methods do you accept?

All major credit/debit cards (Visa, Mastercard, Discover, American Express), Apple Pay, Google Pay, Facebook Pay & PayPal.

Do you accept Medicare or insurance as payment?

We currently only accept the payment methods mentioned above.

Where can I purchase TheraFlex™  Sleeves?

Our sleeves are not sold in stores or anywhere else. They are only sold here, exclusively through our online website. 

Beware of sleeves with designs similar to ours found on Amazon and other websites. There are many copycats who've copied our design but are generally lesser quality that perform poorly and do not last long.

How can we contact you?

Visit our contact us page to send us a message. You can also email us directly at

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#1 Recommended Knee & Leg Compression Sleeve

At TheraFlex™, our mission is to develop innovative products that provide technical-based solutions to improve physical fitness and everyday well-being. Throughout the years, our team has carefully developed a catalog of cutting-edge apparel and garments designed to improve lives. By combining the latest in technology with time-tested products, we've refined each offering to change the current landscape of modern comforts. Based in Phoenix, Arizona USA, we proudly ship to over 50+ countries worldwide. Say hello to the future of innovation, experience the difference with TheraFlex™.

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🇺🇸 15930 S 48th St., Phoenix, AZ 85048