SKU: 87712

Therafirm Core-Sport Unisex Knee High 20-30 mmHg

$58.80

$58.80 $73.50

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Color: Black

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Description

Therafirm Core-Sport 20-30 mmHg Knee High — Targeted Arch Support for Active Days

Therafirm Core-Sport 20-30 mmHg Knee High Compression Socks provide firm 20-30 mmHg graduated compression that is greatest at the ankle and decreases up the leg. Comfort designed top is non-restrictive while staying in place all day. High-tech fibers wick away sweat and other moisture. Super soft yarns are ultra-stretchy and conform to the leg comfortably without losing shape. It is climate comfortable for both hot and cold weather.

Key Features

Graduated Compression: Lab tested gradient compression that is greatest at the ankle, and decreases up the leg.
Moisture Management: High-tech fibers wick away sweat and other moisture.
Stretch-Knit Design: Super soft yarns are ultra-stretchy and conform to the leg comfortably without losing shape.
Stay-Up Comfort: Comfort designed top is non-restrictive while staying in place all day.
Arch Support: Arch compression for added support; added support in the legs and arches aids in stabilization.
Climate Comfort: Climate comfortable for both hot and cold weather.
Cushioned Foot: Cushioned and reinforced heel and foot for durability and reduced impact.
Odor Control: Anti-microbial to help prevent odor in the sock.

Medical Benefits

Arch Support: Added support in the legs and arches aids in stabilization.
Stretch-Knit Comfort: Ultra-stretchy yarns make these socks easier to put on.
Targeted Support: Gentle compression squeeze helps to support muscles and tendons.
Stay-Up Top: Comfort designed top ensures your socks stay in place all day, without being restricting or uncomfortable.
Circulation Support: Healthy gradient compression encourages blood flow and circulation.
Drier, Fresher Feel: Moisture wicking properties provide a drier and more hygienic sock environment.

Best Used For

Sports and Training: Running, weight training, cross-fit and sports such as soccer, basketball, football, baseball and softball.
Tired, Achy Legs: May help relieve heavy, tired, achy legs.
Moderate Swelling: Often recommended by doctors for moderate swelling and mild edema. Talk to your doctor.
Varicose and Spider Veins: Often recommended by doctors for varicose veins, spider veins and venous insufficiency. Talk to your doctor.
After Vein Procedures: Often recommended by doctors after sclerotherapy or vein ligation. Follow your doctor’s direction.

Product Specifications

Brand: Therafirm by Thuasne
Product Series: Core-Sport by Therafirm (Therafirm Sport)
Compression Level: 20-30 mmHg (Firm)
Style: Knee High
Toe Style: Closed Toe
Gender: Unisex
Fabric Content: Coolmax, Nylon and Lycra
Construction: High Stretch; Cushioned and reinforced heel and foot; Arch compression; Moisture-managing knit

Browse by Category: Shop All Therafirm | Women's Therafirm 20-30 mmHg | Men's Therafirm 20-30 mmHg | Therafirm Socks | Athletic Socks

Indications & Contraindications

Do not use compression stockings if the patient has any of the following conditions: severe arterial insufficiency, uncontrolled congestive heart failure, skin infections, red or sensitive skin, hardening of the skin or untreated leg ulcers. Consult physician before application for patients with: impaired sensitivity of the limb, sensitivity to the garment material, or any circulatory disorders. If you have or are at risk of DVT, use compression only as directed by your physician.

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Core-Sport by Therafirm Size Chart

Core-Sport athletic socks 15-20 / 20-30 mmHg

Tap any measurement below to see your full size details.

👆 Tap a value in the table to highlight your size.

Circumference

Measure	S	M	L	XL
Ankle Circumference	17–22 cm6.5"–8.5"	21–26 cm8"–10"	23–29 cm9"–11.5"	28–38 cm11"–15"
Calf Circumference	28–42 cm11"–16.5"	31–45 cm12"–17.5"	33–49 cm13"–19"	43–58 cm17"–23"
Length	30–41 cm12"–16"	33–43 cm13"–17"	36–46 cm14"–18"	38–51 cm15"–20"

S

Ankle Circumference 17–22 cm6.5"–8.5"

Calf Circumference 28–42 cm11"–16.5"

Length 30–41 cm12"–16"

M

Ankle Circumference 21–26 cm8"–10"

Calf Circumference 31–45 cm12"–17.5"

Length 33–43 cm13"–17"

L

Ankle Circumference 23–29 cm9"–11.5"

Calf Circumference 33–49 cm13"–19"

Length 36–46 cm14"–18"

XL

Ankle Circumference 28–38 cm11"–15"

Calf Circumference 43–58 cm17"–23"

Length 38–51 cm15"–20"

Compression is the mean compression for an average ankle size.

Need help choosing your size? Our Certified Fitters are standing by. Mon–Fri 8am–7pm CST

📞 1-800-504-7315

Between sizes? Size down for a firmer therapeutic fit, or up for easier donning. It should feel snug — like a firm, even hug.

Wrong size? No problem. Easy exchanges — we’ll get you into the right fit.

Measure first thing in the morning, before swelling, with a soft tape measure held level. Applies to: Core-Sport. Step-by-step Measuring Guide →

Frequently Asked Questions

What makes Therafirm Core-Sport 20-30 mmHg Knee High Compression Socks different?

Therafirm Core-Sport 20-30 mmHg Knee High Compression Socks provide firm 20-30 mmHg graduated compression that is greatest at the ankle and decreases up the leg. Comfort designed top is non-restrictive while staying in place all day. High-tech fibers wick away sweat and other moisture.

What does 20-30 mmHg mean, and what does it help with?

20-30 mmHg is firm graduated compression: pressure is greatest at the ankle and decreases up the leg. In these knee high socks, it supports the legs during training and recovery and is often recommended by doctors for varicose veins and moderate swelling. Talk to your doctor about whether 20-30 mmHg is right for you.

How do I know I’m ordering the right size?

Measure your ankle and widest calf area and check the garment length if the size chart requires it. Compare the results with the size chart for this exact product before choosing a variant. If you fall between sizes, use the brand’s fitting guidance rather than guessing.

How do I put these on and take them off?

Put the garment on when your legs are dry. Turn it inside out to the heel, guide your foot into place, and work the fabric gradually up the leg without pulling on the top band. Smooth out wrinkles; do not fold or roll the upper edge. To remove it, ease the fabric downward in stages. If gripping or applying the garment is difficult, consider donning and doffing aids, including application gloves and stocking donners.

How should I wash and care for this garment?

Therafirm lists this style as machine washable. Its general garment-care guide recommends hand washing in cool or lukewarm water with a mild detergent to help protect the fibers. Do not bleach, wring or iron; lay flat, line dry or drip dry away from excessive heat. Check the garment label for any style-specific directions.