How to Choose Compression Stockings | Fit, Levels, and Measuring

Compression stockings are a medical tool, not a one-size-fits-all purchase. So how to choose compression stockings comes down to three decisions: the compression level, the style and length, and a fit based on your actual measurements rather than your shoe size.

What Compression Level Do You Need?

Compression strength is measured in millimeters of mercury, or mmHg — the same scale used for blood pressure. The number tells you how much pressure the stocking applies at the ankle, where it is strongest.

Here is how the common ranges break down:

If this is your first pair, get medical guidance on the level before you order.

How To Measure For Compression Stockings: Sizing Rules That Matter

Measure your legs first thing in the morning when swelling is lowest, and do it with a tape measure — never guess from shoe size or age. The fit depends on several points: the ankle, the widest part of the calf, and the length of the leg.

For knee-high stockings, two numbers matter most. Measure the calf at its thickest point, then measure the calf length from the floor to the bend of the knee while you sit with your leg at a right angle.

Stockings also come in different styles and lengths: knee-high, thigh-high, and pantyhose-style. The right choice depends on where the swelling or circulation problem sits, so the garment must cover that area comfortably.

How To Tell The Fit Is Right — And Care For The Stockings

A properly fitted stocking should feel snug but never painful, and it must stay put — no slipping, bunching, or rolling at the top. Pressure should feel consistent along the leg, with no gaps or loose pockets of fabric.

Wear the stockings as prescribed, and put them on first thing in the morning before swelling builds during the day. If you notice numbness, tingling, pain, or skin color changes, remove the stocking and check with a clinician.

For washing, use a mild detergent and skip bleach, fragrances, and dyes. Rinse in plain tap water and avoid chlorinated water. Let them air dry, and follow the product instructions for replace timing — worn-out stockings lose their pressure gradually, so a pair that looks fine may no longer be doing the work.

If you are ready to compare options in the most common support class, our tested roundup of best compression stockings 15-20 mmHg covers top-rated picks for daily wear. For higher-pressure garments, speak with your care team first — the right medical guidance beats any product review.

FAQs

Can I wear compression stockings overnight?

Only wear compression stockings at night if they were made for sleep or a clinician specifically directed it. Most pairs are intended for daytime use and are removed before bed, because the pressure they apply differs from what circulation needs while you lie flat.

How tight should compression stockings feel?

A correct fit is snug but comfortable, with evenly distributed pressure and no pinching, numbness, or pain. The stocking should also stay in place all day without rolling, bunching, or sliding down.

How long do compression stockings last?

Replace them sooner if they feel noticeably looser, sag, or show visible wear.