How to Choose Quilt Batting: Cotton vs Polyester vs Wool (And When Each One Wins)

What quilt batting actually does

Batting is the middle layer of the quilt sandwich — the part between your quilt top and backing. It serves three purposes: insulation (warmth), structure (how the quilt holds its shape), and loft (the visual puffiness between quilted lines). When you see those beautiful texture lines on a quilted surface — where the stitching creates valleys and the unstitched areas puff up — that's the batting doing its job. Different batting materials create dramatically different effects, which is why the choice matters more than most beginners realize.

Cotton batting: the all-arounder

Cotton batting is the most popular choice among quilters, and for good reason. It's breathable, has a flat and traditional look, drapes beautifully after washing, and gives you that crinkly, lived-in texture that makes handmade quilts look and feel like heirlooms. After the first wash, cotton batting shrinks slightly (about 3–5%), which pulls the fabric around the quilting lines and creates that coveted puckered texture. It's medium weight, comfortable in most climates, and works well for both machine and hand quilting.

• Loft: low to medium — gives a flat, traditional appearance
• Shrinkage: 3–5% (creates that classic crinkle after washing)
• Quilting distance: must be quilted every 2–4 inches to prevent shifting
• Best for: bed quilts, lap quilts, baby quilts, anything that will be washed regularly
• Brands to know: Quilters Dream Cotton, Warm & Natural, Hobbs Heirloom Cotton

Polyester batting: lightweight and lofty

Polyester batting is lighter than cotton, won't shrink, and comes in a range of lofts from thin and flat to thick and puffy. It's the go-to for tied quilts, comforters, and projects where you want visible puff between your quilting lines. The downside? Polyester doesn't breathe as well as natural fibers, so quilts can feel warm and slightly slippery. It also has a tendency to "beard" — tiny polyester fibers can migrate through the quilt top over time, especially with dark fabrics. That said, modern polyester battings have improved dramatically, and many quilters swear by them for everyday quilts that need to survive kids, pets, and frequent washing.

• Loft: medium to high — creates visible puff and dimension
• Shrinkage: none (what you sew is what you get)
• Quilting distance: can be quilted up to 4–8 inches apart depending on brand
• Best for: tied quilts, comforters, wall hangings, projects where you want loft without weight
• Brands to know: Quilters Dream Poly, Hobbs Polydown, Mountain Mist Quilt-Light

Cotton-poly blend: the best of both worlds

The most common blend is 80% cotton / 20% polyester, and it's arguably the most versatile batting on the market. You get the breathability and drape of cotton with a little extra loft and stability from the polyester. Blends resist bearding better than pure polyester, shrink less than pure cotton, and can typically be quilted up to 4 inches apart — more forgiving than 100% cotton. If you're making a quilt as a gift and don't know the recipient's preferences, an 80/20 blend is the safest bet. It performs well in every situation and offends nobody.

• Loft: low to medium — slightly more than pure cotton
• Shrinkage: 1–3% (less crinkle than pure cotton)
• Quilting distance: up to 4 inches apart
• Best for: gift quilts, all-purpose projects, quilters who want easy and reliable
• Brands to know: Hobbs Heirloom 80/20, Warm & White (blend version)

Wool batting: warm, light, and luxurious

Wool batting is a favorite among experienced quilters who want warmth without weight. It's naturally temperature-regulating — warm in winter, breathable in summer — and has a beautiful drape that makes quilts feel expensive. Wool also resists creasing, so if you fold a wool-batted quilt and store it for months, it won't develop permanent fold lines like cotton sometimes does. The tradeoff is price: wool batting costs roughly 2–3x what cotton costs. It can also beard through light-colored fabrics if the batting isn't high quality, and some quilters find it harder to needle through by hand. But if you're making a special quilt — a wedding gift, a legacy piece, something you want to last decades — wool is worth every penny.

• Loft: medium — visible but not puffy, with exceptional drape
• Shrinkage: 1–3% (minimal)
• Quilting distance: up to 3–4 inches apart
• Best for: heirloom quilts, show quilts, quilts where drape matters, three-season quilts
• Brands to know: Hobbs Tuscany Wool, Quilters Dream Wool, Matilda's Own Wool

Bamboo batting: the eco-friendly lightweight

Bamboo batting has gained serious popularity in the last few years, especially among quilters who want a natural fiber that's lighter than cotton. It's silky smooth, drapes beautifully, and has natural antimicrobial properties. Bamboo is also more breathable than cotton, making it ideal for summer quilts and baby quilts where you want softness without bulk. Most bamboo battings are actually a bamboo-cotton blend (typically 50/50), which gives you the benefits of both fibers. Pure bamboo is harder to find and tends to be more delicate. The quilting distance for bamboo is similar to cotton — every 2–4 inches — and it shrinks about 2–3%.

• Loft: low — very flat and lightweight
• Shrinkage: 2–3%
• Quilting distance: every 2–4 inches
• Best for: baby quilts, summer quilts, lightweight throws, eco-conscious quilters
• Brands to know: Quilters Dream Green (bamboo blend), Pellon Bamboo-Cotton

How to decide: the 3-question framework

Instead of memorizing every batting spec, just answer three questions and you'll land on the right choice every time.

• What's the quilt for? Bed quilt → cotton or 80/20 blend. Wall hanging → polyester (holds shape). Baby quilt → bamboo or cotton (soft and washable). Heirloom → wool.
• How do you want it to feel? Flat and crinkly → cotton. Puffy and lofty → polyester. Drapey and luxurious → wool. Silky and lightweight → bamboo.
• How will it be quilted? Dense quilting (every 1–2 inches) → any batting works. Moderate quilting (every 3–4 inches) → cotton, blend, or wool. Wide spacing (4+ inches) or tied → polyester or a high-loft blend.

How to calculate batting size

Batting should be larger than your quilt top on all sides to account for shifting during quilting. The standard rule is to add 4–6 inches to both the width and length of your quilt top. So if your quilt top is 60" × 80", you need batting that's at least 64" × 84" — ideally 66" × 86" if you're sending it to a longarm quilter (they need extra for loading on the frame).

Common batting mistakes to avoid

A few pitfalls that trip up quilters at every experience level — not just beginners.

• Buying batting that's too small. Always check the package dimensions against your quilt top PLUS overage. Standard batting sizes (crib, twin, queen, king) don't always match your quilt.
• Not prewashing when needed. Some cotton battings recommend prewashing to pre-shrink. Others specifically say not to. Read the label — it varies by brand.
• Using high-loft batting for your first quilting project. High loft is harder to machine quilt through and shifts more easily. Start with low-loft cotton or a blend.
• Ignoring quilting distance. If your batting says "quilt every 4 inches" and you only quilt the borders, the batting will bunch, shift, and ruin the quilt after a few washes.
• Storing batting folded for months. The fold lines can become permanent creases. Roll batting instead of folding, or tumble it in the dryer on low heat for 10 minutes to relax creases before use.

Let StitchLogic pick the right batting size

StitchLogic's project calculator includes batting as a built-in step. Enter your quilt top dimensions, specify whether you're quilting at home or sending to a longarm, and the app tells you exactly what size batting to buy — including which standard pre-packaged size fits your project. No more standing in the store comparing package dimensions to your phone's calculator. It also factors batting into your total project cost estimate, so you know the full price of your quilt before you buy a single yard of fabric.