Size
"Sizing of these are smaller than what the measurements are"
SKU: X220SB-S
CSX Advanced+ 20-30 mmHg Knee High Compression Socks
$40.40
$40.40
$70.50
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HSA/FSA eligible for qualified customers.
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Returns: Qualifying returns: 30 days. The return-label cost is deducted from the refund unless the order has Free Returns Coverage. Free exchanges within 100 days. Details
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Description
CSX Compression Sport Socks 20-30 mmHg — Firm Graduated Compression for Sport and Recovery
CSX compression sport socks deliver 20-30 mmHg firm graduated compression built for athletes and active wearers, with the greatest support at the ankle reducing gradually up the leg. CSX is the athletic line from Surgical Appliance Industries, whose parent company has manufactured medical-grade compression for over 100 years.
Key Features
Medical Benefits
Clinical Applications
Product Specifications
Indications & Contraindications
CSX Compression Sport Socks & Calf Sleeves Size Chart
Recovery 15-20 mmHg · Advanced+ 20-30 mmHg
Tap any measurement below to see your full size details.
Do not base your size on your shoe size. Medical compression garments require precise ankle and calf measurements to work correctly. Please use your exact measurements on the chart below to find your perfect fit.
👆 Tap a value in the table to highlight your size.
Circumference
| Measure | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| Ankle Circumference | 18–20 cm7"–7¾" | 20–24 cm8"–9½" | 25–28 cm9¾"–11" | 29–33 cm11½"–13" |
| Calf Circumference | 26–36 cm10¼"–14¼" | 28–40 cm11"–15¾" | 30–44 cm11¾"–17¼" | 32–48 cm12½"–19" |
Small
Ankle Circumference
18–20 cm7"–7¾"
Calf Circumference
26–36 cm10¼"–14¼"
Medium
Ankle Circumference
20–24 cm8"–9½"
Calf Circumference
28–40 cm11"–15¾"
Large
Ankle Circumference
25–28 cm9¾"–11"
Calf Circumference
30–44 cm11¾"–17¼"
X-Large
Ankle Circumference
29–33 cm11½"–13"
Calf Circumference
32–48 cm12½"–19"
- Measure the ankle at its smallest point, just above the ankle bone, and the calf at its widest point.
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: Knee High Compression Socks, Calf Sleeves. Step-by-step Measuring Guide →
Measuring Guide for Sizing of Compression Stockings
Sizing
Measuring Guide
How to measure your legs for compression stockings, support socks, support hose, and gradient compression hosiery.
Where to Measure
- For knee-highs: measure around your ankle and calf. Then measure the distance from the floor to the back of your knee.
- For thigh-highs and pantyhose: measure around your ankle, calf, and upper thigh. Then measure the distance from the floor to your upper thigh (bottom of your buttocks).
An important measuring tip: take your measurements with a tape measure, as shown below. Sizing charts are located on every product’s “see details” page for your convenience. If you need further assistance, please call 1-800-504-7315 or Live Chat with us.
How to Properly Measure and Apply Compression Stockings
The Key Measurements
Ankle
Measure around the ankle at the narrowest point, generally above the ankle bone.
Calf
Measure around the calf muscle at the widest part.
Length
Measure from the floor to the bend behind the knee.
Thigh
Measure around the thigh approximately 3 inches below the gluteal fold (crease of the buttocks).
Thigh Length
Measure the distance from the bottom of your buttocks to the floor.
Sizes may differ between various brands of support stockings—each manufacturer has their own sizing chart. A medium in one brand may not be a medium in another, and some brands offer petite (shorter) lengths while others do not. Knowing your measurements will ensure you get compression hosiery that fits properly and comfortably. Sizing charts are located on every product’s “see details” page.
Please call 1-800-504-7315 or Live Chat if you need more help sizing.
Measured up? Find your exact size
Take your measurements straight to our interactive brand charts, or convert a size you already know into another brand.
Interactive size charts Size converter (switch brands)Frequently Asked Questions
What are CSX compression sport socks?
What does 20-30 mmHg mean, and what does it help with?
How do I know I'm ordering the right size?
How do I put these on and take them off?
How do I care for them, and how long do they last?
Overall rating: 4.376344 / 5 from 93 reviews.
AI Generated Review Summary
Summary topics
Review topics: ["fit","quality","support","price","socks","compression"].
Review highlights
Reviews
The Best
"The CSX Recovery Athletic Knee High Socks in 20-30 mmHg compression grading are excellent in the way they feel (not too thick) and how they truly hold their own (don’t wind down). They are thin enough — thicker than stockings but thinner than athletic sport sock — to wear in boots or shoes. Thy feel good on the toes and are so strong that they can be difficult to put on without either donning gloves or a donner (helps a lot). If you’re looking for athletic style socks that last all day, these are it."
I love these. After several
"I love these. After several surgeries I have found that they really help reduce swelling and helped with circulation."
Packaging is fine
"Packaging could offer more protection."
compression fine with rather garish
"compression fine with rather garish pattern but OK for walking and other athletic pursuits."
Good compression
"Good for workouts"
They are okay but lets
"They are okay but lets see over time how they do"
Performs fine
"Performs fine, could be quicker for bigger tasks."
Simple packaging
"Simple packaging, works fine for the product."
The Silver Black pair of
"The Silver Black pair of socks fit very well, was pleased with the product."
