Choosing compression tights comes down to your exact measurements and the compression level you need for your activity.
Regular clothing sizes won’t help you here — compression garments rely on precise body measurements to apply the right amount of pressure. The most important are waist, hip, thigh, calf, and leg length, though the exact set varies by brand. The right fit is the difference between support and cut-off circulation.
Why Compression Levels Matter
Compression tights apply graduated pressure measured in millimeters of mercury (mm Hg), improving blood flow and reducing muscle fatigue. A medical review groups levels into three classes: low compression under 20 mm Hg (class 1), medium compression from 20–30 mm Hg (class 2), and high compression above 30 mm Hg (class 3 or higher). For everyday athletic wear and general leg fatigue, low-to-medium compression is typical; medical-grade compression above 20 mm Hg serves a different purpose and should match a specific condition. Importantly, compression stockings are contraindicated in severe arterial blood flow disorders — get a clinician’s advice before wearing them if you have any arterial condition. NHS guidance tells patients to use stockings only as instructed by their healthcare professional.
Which Measurements Do You Need?
The measurements depend on what you’re buying. Most tights, however, require more: full leg length from the base of the heel to the crotch, plus circumference points. Some sizing guides require hip only, while others ask for ankle, thigh, and hip for waist, maternity, or chaps styles. As a general rule, gather:
- Waist and hip for all tights
- Calf and thigh for knee-high and thigh-high styles
- Full leg length (heel to crotch) for full-length tights
Measure with a tape held horizontal and snug but not tight at the prescribed points. Follow the product’s own chart exactly.
How to Measure Yourself Correctly
Use a flexible tape, stand straight, and measure at the chart’s specified points: waist at the narrowest torso part, hips around the fullest buttocks, thigh and calf at their widest circumference, and leg length from heel base to crotch. Keep the tape horizontal and snug, not loose or digging in. Take each measurement twice for consistency. If you fall between sizes, brand guidance varies — some recommend the smaller size for athletic builds, others suggest sizing up. Check the brand’s specific guidance; manufacturer charts differ, so a medium in one brand may not match another.
Common Sizing Mistakes to Skip
Most fit problems trace to a few avoidable errors: choosing by regular clothing size instead of the measurement chart, skipping required hip, thigh, or length measurements, using the wrong compression level (medical is not athletic), and assuming one brand’s sizing translates to another. The real test is how the tights feel: snug and supportive without pain, numbness, or skin irritation. If they pinch or leave deep marks, the fit is wrong. For medical-grade compression, get a clinician’s input on fit and level before buying. Cardinal Health’s compression sizing poster reinforces the same principle: measure carefully, use the brand’s chart, and verify fit against stated circumference ranges. The extra five minutes of measuring beats a return shipment.
FAQs
What compression level is best for everyday wear?
For general leg fatigue, travel, or athletic recovery, low compression under 20 mm Hg is the standard starting point. Medium compression between 20 and 30 mm Hg is used for more pronounced swelling or varicose veins. Anything above 30 mm Hg is medical-grade and should be chosen with a clinician’s guidance.
Should I size up or down if I’m between sizes?
It depends on the brand and body type. Some manufacturers recommend the smaller size for athletic builds, others suggest the larger size when in doubt. Check the brand’s specific guide — there’s no universal rule. A snug fit is normal, but never cause numbness or deep pressure marks.
Can I wear compression tights if I have poor circulation?
Compression helps certain circulation issues, but they are contraindicated in severe arterial blood flow disorders. If you have any arterial condition or circulation concerns, talk to a healthcare professional before use to confirm safety and appropriate level.
References & Sources
- NHS Inform. “Compression Stockings and Socks.” Explains how to apply compression stockings and follow clinician guidance.
- Cardinal Health. “Compression Sizing Poster.” Provides multi-point measurement instructions for correct compression garment fit.
- National Center for Biotechnology Information. “Compression Therapy: A Review.” Defines compression classes and notes contraindications for arterial disorders.