SKU: 505CS3O77
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The Sigvaris Natural Rubber Knee High stocking (also commonly called a compression sock) is built for high-level compression for chronic venous conditions, delivering 50-60 mmHg graduated compression in an open toe style, in a unisex fit. Part of Sigvaris' Natural Rubber line, it's made with 100% latex rubber and nylon construction that combines advanced compression therapy with remarkable comfort and mobility, designed for durable containment with minimal fiber fatigue throughout the day. A practical choice for more severe, chronic venous conditions that need the highest compression levels. With more than 160 years of family ownership, Sigvaris is trusted by pharmacies, clinics, and medical professionals worldwide.
Specialty
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.
Find your size from your measurements in this table.
| Measure | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| Ankle Circumference | 19–23 cm7.5"–9" | 23–30 cm9"–12" | 30–40 cm12"–15.5" | 40–46 cm15.5"–18" |
| Calf Circumference (Average) | 28–38 cm11"–15" | 32–43 cm12.5"–17" | 36–48 cm14.5"–19" | 45–57 cm18"–22.5" |
| Calf Circumference (Full) | ≤43 cm≤17" | ≤48 cm≤19" | ≤57 cm≤22.5" | ≤68 cm≤27" |
| Calf Circumference for 505C (Full only) | 32–43 cm12.5"–17" | 36–48 cm14.5"–19" | 45–57 cm18"–22.5" | Not available in XLNot available in XL |
| Thigh Circumference (Average) | 41–54 cm16"–21" | 48–61 cm19"–24" | 58–71 cm23"–28" | NANA |
| Thigh Circumference (Full) | ≤61 cm≤24" | ≤71 cm≤28" | ≤81 cm≤32" | NANA |
| Thigh Circumference for 505T (Full only) | ≤61 cm≤24" | ≤71 cm≤28" | ≤81 cm≤32" | NANA |
| Hip Circumference Guidelines | <122 cm<48" | <137 cm<54" | <155 cm<61" | NANA |
Then measure your length to choose Short or Long. Your size is your Step 1 size in that length.
| Measure | Short | Long |
|---|---|---|
| Calf Length | ≤40 cm≤15.5" | >40 cm>15.5" |
| Leg Length | ≤71 cm≤28" | >71 cm>28" |
Size codes: Numeric size codes combine letter + column number: 1 = Average calf, Short; 2 = Average calf, Long; 3 = Full calf, Short; 4 = Full calf, Long. Small S1–S4, Medium M1–M4, Large L1–L4, X Large X1–X4.
Measure first thing in the morning, before swelling, with a soft tape measure held level. Applies to: Natural Rubber 500 Knee Highs, Thigh Highs, Pantyhose. Step-by-step Measuring Guide →
How to measure your legs for compression stockings, support socks, support hose, and gradient compression hosiery.
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.
Measure around the ankle at the narrowest point, generally above the ankle bone.
Measure around the calf muscle at the widest part.
Measure from the floor to the bend behind the knee.
Measure around the thigh approximately 3 inches below the gluteal fold (crease of the buttocks).
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.
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)
Overall rating: 4.5 / 5 from 4 reviews.
Review topics: [].
"I have used these for lymphaedema Praecox of the left lower leg since 1984, they have controlled the swelling very well, The price with a discount was great, i always pay myself rather than stressing with insurance. They easily last 6-9 months, I only use them on my left leg."
"Used the measuring guide to make sure I had the right size, everything worked perfectly. The compression stockings were comfortable did what they were supposed to now I’m buying another pair."
"great quality and service"
"Suitable for light use, could be better for heavy-duty tasks."
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