What Are Compression Socks and How Do They Work? A Canadian Beginner's Guide

What are compression socks?

Compression socks are specially knit knee-high or thigh-high hosiery that apply controlled pressure to the legs. Unlike everyday athletic socks, they are engineered with a specific pressure profile that is firmest at the ankle and gradually decreases as the fabric moves up the leg. That pressure profile is called graduated compression, and it’s the feature that makes compression socks distinct from regular socks, sport socks, or fashion knee-highs.

The pressure is measured in millimetres of mercury — a unit you may recognise from blood pressure readings — written as mmHg. A pair labelled 15–20 mmHg, for example, applies between 15 and 20 millimetres of mercury of pressure at the ankle, decreasing as the sock travels up the calf. Most compression socks sold in Canada fall into a handful of standard ranges, and each range is designed for a different kind of daily use.

BuraCare’s socks are knit from a blend of 75% microfibre nylon and 25% Lycra (elastane), which gives them controlled stretch and helps keep their shape over many washes. The fabric is latex-free, breathable, and OEKO-TEX® certified for skin safety, which matters because compression hosiery is worn directly against the skin for many hours at a time.

How does graduated compression actually work?

Your legs do a lot of quiet work all day. The veins in your lower legs carry blood back up toward the heart against gravity, helped along by the squeezing action of your calf muscles every time you walk, climb a stair, or shift your weight. When you sit at a desk for hours, stand behind a counter for a whole shift, or sit motionless on a long flight, those calf muscles don’t pump as effectively. Blood and fluid can pool in the lower legs, which is one reason ankles can feel puffy by the end of the day and calves can feel heavy.

Graduated compression socks apply a gentle, external squeeze that supports this natural pumping action. The strongest pressure is at the ankle, where venous return is most challenged by gravity, and the pressure tapers off toward the knee so it doesn’t constrict the upper leg. According to peer-reviewed literature available through the U.S. National Library of Medicine, this design is widely used to support venous circulation in the lower limbs.

That said, compression socks are not a treatment for any specific medical condition unless prescribed by a clinician. They are an everyday wellness tool many Canadians use to feel more comfortable through long days — in the same category as a supportive insole or an ergonomic chair cushion.

Why the pressure gradient matters

Pressure that’s evenly tight from ankle to knee (called uniform compression) is used in very different contexts — typically for non-mobile or bedridden patients in clinical settings. For someone who is up and moving around, graduated compression is the standard. We have a full explainer comparing the two in our guide to graduated vs. uniform compression.

Who wears compression socks in Canada?

The honest answer is: a much wider range of Canadians than you might expect. Compression socks used to live mostly in hospitals and pharmacy aisles, but today they’ve become a quiet everyday wellness essential.

• Healthcare workers — nurses, doctors, paramedics, and PSWs who spend 8–12 hours on their feet during a shift. See our guide on compression socks for nurses in Canada.
• Office workers and remote professionals who sit at a desk for hours at a stretch and notice their ankles feeling stiff or puffy by late afternoon.
• Frequent travellers on long-haul flights out of Toronto, Vancouver, Montreal or Calgary — particularly anyone heading to Europe, Asia, or destinations on the other side of the world.
• Teachers, retail and hospitality workers, and anyone in a job that keeps them upright most of the day.
• Active people and runners who wear compression during recovery or low-impact training.
• Pregnant women who notice leg heaviness and mild ankle swelling, especially in the second and third trimesters.
• Older adults who want a small, low-effort way to support daily leg comfort.

If you see yourself in even one of those categories, you’re probably the kind of person who would notice a difference from wearing the right pair for a few days in a row.

Choosing your compression level

Compression level — that mmHg number — is the single most important spec on a pair of compression socks. Most over-the-counter socks in Canada come in two main ranges:

If you’re new to compression and don’t have a specific medical reason for choosing a higher level, 15–20 mmHg is widely considered a sensible starting point. BuraCare’s 15–20 mmHg single pair is designed exactly for that — a comfortable first step that’s gentle enough to wear for the whole day. If you know you want something firmer (a 12-hour nursing shift, for example), the 20–30 mmHg pair is the next step up.

Choosing a higher mmHg is not automatically “better.” A level that’s too high for what you need can feel uncomfortable and may not give you the gentle daytime support you were after. We’ve written more on that in 15–20 vs 20–30 mmHg: which is right for you?

How to choose your first pair

Once you’ve picked a compression level, three other choices shape how the sock will feel through the day: size, length, and fabric.

1. Size

Size is determined by your ankle circumference, your calf circumference, and your leg length — not by your shoe size alone. Compression socks that are too small can dig in at the ankle or top band; ones that are too large lose their effective compression and slide down. Measure first thing in the morning, before swelling builds up, using a soft tape. Walk through it with our sizing guide.

2. Length

Most people start with knee-high socks because they cover the area where most lower-leg swelling and fatigue is felt. BuraCare offers two lengths — Petite for shorter calves and Long for taller ones — so the top band sits roughly two finger-widths below the bend of the knee.

3. Fabric

Fabric matters because compression hosiery is worn against your skin for many hours. Look for a knit that is breathable, moisture-wicking, and free from latex if you have any sensitivity to it. The OEKO-TEX® standard, which BuraCare materials meet, tests fabric for a long list of substances of concern. We unpack what that actually tests for in our piece on OEKO-TEX® certification.

A simple daily routine

Putting compression socks on for the first time can feel a little awkward, like learning to do up a new kind of strap. After two or three mornings it becomes muscle memory. A few practical tips:

• Put them on in the morning. Your legs are at their least swollen right after you wake up, which is when the sock is easiest to roll on smoothly. The full step-by-step sequence is on our care & usage page.
• Don’t yank. Turn the sock inside out down to the heel, slide your foot in, then unroll the leg portion up smoothly. Hard tugging stresses the knit and can shorten its life.
• Smooth out folds. A bunched section creates a tight band where the pressure is uneven. Take ten extra seconds to flatten the fabric against your calf.
• Take them off at the end of the day. Compression is most useful while you’re upright. For most people without specific medical guidance, sleeping in them isn’t necessary.
• Air-dry, no bleach. Hand wash or gentle machine cycle in cool water, then lay flat to dry. This is what protects the elastic fibres.

Frequently asked questions

Do I need a prescription to buy compression socks in Canada?

No, you do not need a prescription to buy compression socks in Canada at any common over-the-counter level. However, if you want your Canadian extended health insurance plan to reimburse you for a medical-grade pair (typically 20–30 mmHg or higher), most plans require a prescription from a qualified healthcare provider.

Are compression socks safe for everyday wear?

For most healthy adults, 15–20 mmHg compression socks are generally considered comfortable for everyday wear. If you have peripheral arterial disease, severe nerve damage, certain skin conditions, or any unusual leg symptoms, it’s worth checking in with your healthcare provider before starting a routine.

How long can I wear compression socks each day?

Most people wear them through their active hours — from morning until they wind down in the evening — and take them off at bedtime. Wearing them while you’re upright is when the design is doing the most work.

Will compression socks make my legs weaker?

No. Compression socks support your circulation while you wear them; they don’t replace the work your muscles and veins are already doing. There’s no reliable evidence that everyday graduated compression weakens leg function over time.

How often should I replace them?

Compression hosiery is a wear item. Elastic fibres soften over many wash and wear cycles, which gradually reduces the pressure profile the sock can deliver. If your socks no longer feel supportive or no longer stay up the way they used to, it’s time for a new pair. See our guide on when to replace your compression socks.

This article is for general information and is not medical advice. If you have a specific health condition or persistent leg symptoms, please consult a Canadian healthcare professional.