The Best Yoga Blankets

The short answer

Buy one heavy, tightly woven cotton blanket, around 60 by 80 inches. That is the prop. The test that separates a yoga blanket from every other blanket in your house is simple: fold it into quarters, sit on the stack, and see whether it stays a firm block or squashes out sideways. A prop blanket holds the fold. A throw does not, which is why the soft fleece thing on your sofa is useless for this and why the scratchy cotton one in a studio cupboard is not.

It is worth knowing how much this one object replaces. Folded into a long thin strip it is a bolster under the knees. Folded into a brick it is a block under the hips for seated work. Rolled it is a support under the neck. Spread flat it is a layer of warmth for the ten minutes at the end of a practice when your body temperature drops. Nothing else in this category is six props at once, and it is the cheapest of them.

What actually decides it

Four properties matter, and the first two are the ones that decide whether you have bought a prop:

• Weave density. A tight weave holds its shape folded; a loose one spreads. This is the whole difference, and it is also the hardest thing to judge from a photograph, which is why a published weight is a useful proxy.
• Weight. Around 3.5 pounds for a full-size blanket is the studio range. Lighter than about two pounds and you are looking at a throw whatever it is called.
• Size. You want roughly 60 inches wide by 80 or so long. Wide enough to cover you lying down, long enough to fold into a usable stack. A 50 by 60 inch blanket folds into something too small to sit on.
• Fiber. Cotton folds crisply and washes. Wool is warmer, more compliant, and usually cannot go in a machine. Covered properly in the next section but it is the last decision, not the first.

What does not matter: the pattern, the fringe and whether it is reversible. A fringe is mildly annoying because it gets underfoot and nothing more.

The six things it does

The fifth row is the one that justifies buying a proper one. In shoulderstand the blanket stack lifts the shoulders so the neck is not bearing the load, and for that it has to be a firm, level, non-spreading platform. A soft blanket under the shoulders is worse than nothing because it compresses unevenly. If you never go upside down, that row does not apply to you and a softer blanket is fine.

The second row overlaps with something you may already own. A folded blanket under the hips does the same job as a block on its side, and the same job as a meditation cushion. If sitting is mostly what you want help with, a cushion holds its shape better; if you want one object that does several things, the blanket wins.

Cotton or wool

Cotton is the default and the studio choice. It folds with crisp edges, it holds a stack, it goes in a washing machine, and it does not make anyone itch. It creases, and a creased blanket folds slightly less evenly, which is a real but minor complaint. Handwoven Mexican cotton blankets are the inexpensive end of this and the reason half the studios in the country have a pile of them.

Wool is warmer per ounce and more compliant in a fold — it drapes where cotton stands up. The two costs are cleaning and skin: most wool prop blankets ask for dry cleaning or a cold hand wash, and some people cannot have wool against bare arms. Buy wool if your practice space is cold and your restorative holds are long. Buy cotton for everything else.

A note on what you are actually paying for at the top of the range. The studio cotton blanket costs several times what a handwoven Mexican blanket costs, and what the money buys is a published weight, a published fiber content, a consistent size between pieces, and a machine-washable finish. Those are real things. They are not worth it for your first blanket and they are worth it for the one you fold under your shoulders.

How many do you need

One, if you are using it as a general prop and a layer of warmth. Two, if you do restorative practice, because a supported setup usually wants one folded under your body and one over the top of you — and a blanket cannot be both at once. Three or more is a studio stocking a room, not a person practicing at home.

The honest answer for most readers is: buy one, use it for a month, and you will know. The specific moment people discover they want a second is the first supported reclining pose where they fold the only blanket they own under their knees and then get cold.

If your reason for wanting one is warmth in the last ten minutes of a practice rather than structure underneath you, that is worth separating out. Warmth is a wool question and structure is a weave question, and buying one blanket to do both means compromising on one of them. The first 30 days is where most people find out which one they actually care about.

Why a throw does not work

It is worth being precise about this, because the obvious move is to use a blanket you already own and for some uses that is genuinely fine. Spread flat over you in savasana, any blanket works. The failures are all structural:

• Fleece and microfiber have almost no weave to speak of. Folded, they compress to nothing under body weight. Useless as support, fine as a cover.
• Loose-knit throws spread sideways as soon as you sit on the stack, so the height you set up with is not the height you end up at.
• Duvets and quilts are too thick to fold into anything precise and too soft to hold a level platform.
• Thin cotton bedsheets and summer blankets fold crisply and are too light to produce any useful height — you need six folds to get what a prop blanket gives you in two.

So the practical test before you buy anything: take the heaviest woven blanket in your house, fold it in quarters, sit on it and see whether it holds. If it does, you own a yoga blanket already. If it squashes flat, that is the specific gap a prop blanket fills, and it is also a useful preview of how much height you want.