Innerspring Mattress Buying Guide: What to Look For

To buy an innerspring mattress, choose the coil type first, then check coil gauge, match firmness to your sleep position and body weight, and confirm the comfort layer, edge support, base, trial, and warranty fit your needs. Innersprings tend to cost less and feel bouncier than all-foam beds.

Below, you will find each buying step in order, a firmness table by sleep position, how innersprings are built, who they suit, which certifications matter, and the alternatives if a spring bed is not the right fit.

How to Choose an Innerspring Mattress

To choose an innerspring mattress, work through seven decisions in order, from the coil unit to the trial and warranty.

1. Choose a coil type.
2. Check coil gauge before coil count.
3. Match firmness to your sleep position and weight.
4. Pick a comfort layer and top style.
5. Check edge support and motion transfer.
6. Plan the base it will sit on.
7. Compare the trial and warranty.

Step 1: Choose a Coil Type

The coil type sets how the whole mattress moves, so decide it first. Innersprings use one of four designs:

• Bonnell coils: hourglass-shaped and wired together, the classic lower-cost open coil.
• Offset coils: hourglass-shaped with flattened, hinged tops that flex a little more with your body.
• Continuous coils: one long wire bent into rows, forming a firm, connected unit.
• Pocketed coils: straight coils sewn into individual fabric sleeves, so each one compresses on its own.

Connected coils (Bonnell, offset, and continuous) usually cost less and feel bouncier, while pocketed coils tend to pass along less motion. The open coil vs. pocket spring mattress guide compares the two in detail.

Step 2: Check Coil Gauge Before Coil Count

Coil gauge tells you more about feel than coil count does. Gauge measures wire thickness, and a lower number means thicker wire, which tends to feel firmer and last longer; higher-gauge coils tend to feel softer and springier. Many beds mix gauges to firm up the center or the edges.

More coils usually spread your weight across more points, but counts change with mattress size and coil design, since slim pocketed coils pack in more than wide hourglass coils. Compare counts only between beds of the same size and coil type.

Step 3: Match Firmness to Your Sleep Position

Your sleep position decides how firm the bed should be. The table uses Sleep Junkie’s firmness scale, where 1 is softest and 10 is firmest.

These ranges assume a sleeper of about 130 to 230 pounds. Under 130 pounds, go one step softer; over 230 pounds, go one step firmer and favor lower-gauge coils, as covered in the best mattresses for heavy people.

To compare models by position, see the best mattresses for side sleepers, the best mattresses for back sleepers, or the best mattresses for stomach sleepers. If back pain is part of your decision, see the best mattresses for back pain.

Step 4: Pick a Comfort Layer and Top Style

The comfort layer above the coils decides how cushioned the bed feels. Thin padding feels firm and springy, while a thicker layer lets the shoulder and hip sink in further.

• Memory foam contours closely and slows motion but can hold more warmth.
• Latex is bouncier and pushes back faster, with less hug.
• Polyfoam and fiber keep costs down, though thin layers tend to compress sooner.
• Cotton and wool usually appear in the cover, where they breathe and wick moisture; some makers use wool as a fire barrier instead of chemical flame retardants.

For extra cushioning, a pillow top is stitched onto the surface, while a Euro top is sewn flush with the edges; see pillow tops and Euro tops for the difference and the best pillow top mattresses for picks. Side sleepers who want more give can also compare mattresses for pressure points.

A topper can adjust a bed you already own: a plush one softens it, and a dense one can make a mattress firmer.

Step 5: Check Edge Support and Motion Transfer

Good edge support keeps the perimeter from sagging when you sit or sleep near the side, and low motion transfer keeps a partner’s movement from reaching you. Many innersprings reinforce the edge with firm foam or thicker perimeter coils. When I test edge support, I sit on the perimeter and watch how far it compresses, and you can do the same during a trial.

Coil type drives most of the motion result (see Step 1), so light sleepers who share the bed should favor pocketed coils and a thicker comfort layer, or compare the best mattresses for couples.

Step 6: Plan the Base It Will Sit On

Match the base to the coil type, because the wrong foundation can shorten an innerspring’s life. Connected-coil innersprings are usually designed for a box spring. Pocketed coil models usually do best on a solid or closely spaced slatted foundation, since an older box spring can sag unevenly under them.

Many innersprings also work on a sturdy platform frame; see the best mattresses for a platform bed. Connected coils are usually not built to bend, so check compatibility before pairing one with an adjustable bed.

Step 7: Compare the Trial and Warranty

A long sleep trial and a clear warranty protect you if the firmness is wrong or the coils fail early. Trials commonly run from about 100 nights to a year, long enough to test a mattress through weeks of real sleep. Warranties range from several years to a lifetime but usually cover defects such as broken coils or deep sagging, not gradual softening, so read the exclusions. To compare on comfort alone, see the most comfortable mattresses.

What Is an Innerspring Mattress?

An innerspring mattress is a bed whose main support comes from a core of steel coils, with a comfort layer and a quilted cover on top. It is the traditional spring bed among the types of mattresses, and classic models pair a connected coil unit with fairly thin padding.

Every innerspring has three parts:

• Support core: the coil unit, which carries your weight and sets the bounce.
• Comfort layer: foam, fiber, or latex padding that cushions you from the coils.
• Cover: a quilted fabric shell, sometimes with a pillow top or Euro top built in.

When pocketed coils sit under a thick layer of memory foam or latex, the bed is usually sold as a hybrid mattress instead. The guide to hybrid vs. innerspring mattresses explains where that line falls and how the two compare.

Is an Innerspring Mattress Right for You?

An innerspring is usually a good fit if you want a bouncy, airy bed at a lower price, and a weaker fit if you want deep cushioning or sleep next to a restless partner. Use these lists to check.

Choose an innerspring if:

• You want an affordable mattress and would rather spend on coil quality than thick foam.
• You like a responsive surface that is easy to turn over on.
• You care about sleeping temperature and want air moving freely through the core.
• You like to feel on top of the bed rather than sunk into it.
• You already own a box spring in good shape.

Consider another type if:

• You want the bed to hug your shoulders and hips.
• You wake easily when a partner moves.
• You plan to use an adjustable base.

If you want pocketed coils with more cushioning than a classic innerspring, the Amerisleep AS3 Hybrid is a medium hybrid with memory foam over individually wrapped pocketed coils.

What Certifications Should an Innerspring Mattress Have?

The most useful labels for an innerspring cover the foam, fabric, and latex around the coils: CertiPUR-US for foam, OEKO-TEX STANDARD 100 for fabrics, GOLS and GOTS for organic latex and textiles, and GREENGUARD Gold for low emissions. The steel coils themselves are not what these programs test.

Check which part of the bed each label applies to, since a certified cover says nothing about the foam beneath it. Broad green claims with no named certification behind them, a practice often called greenwashing, are worth questioning. If allergies shape your search, compare mattresses for allergies.

What Are the Alternatives to an Innerspring Mattress?

The main alternatives are memory foam, latex, and hybrid mattresses, and each trades some of an innerspring’s bounce and airflow for a different feel. If you are open to any type, start with the general mattress buying guide, the steps for how to choose the right mattress, or the best mattresses across every type.

• Memory foam: an all-foam build with no coils, often chosen by side sleepers and couples. Read the memory foam mattress buying guide or compare gel memory foam mattresses.
• Latex: natural or synthetic latex layers that feel springy without steel coils. See the latex mattress buying guide and these latex mattresses.
• Hybrid: the closest alternative, since it keeps a coil core. The hybrid mattress buying guide covers what to check.

If heat is your main concern with any type, compare the picks for a cooling mattress for hot sleepers.

The Bottom Line

The right innerspring comes down to the coil type, a firmness that matches your sleep position and weight, and a comfort layer thick enough for the cushioning you want. Check the edge, the base, and the trial and warranty before you commit. If you want pocketed coils under memory foam, start with the Amerisleep AS3 Hybrid; for traditional spring beds, compare the best innerspring mattresses.

Frequently Asked Questions

How many coils should an innerspring mattress have?

There is no single right number, because coil count changes with mattress size and coil design. As a rough benchmark, many pocketed coil queens have about 800 coils or more, while connected coil queens usually use fewer, wider coils. Treat the number as one clue among several, since gauge and coil design affect support as much as count does.

Does an innerspring mattress need a box spring?

A traditional innerspring with connected coils usually does, because the box spring adds give and helps the coil unit wear evenly. Pocketed coil models usually do not; they are typically designed for a solid or closely spaced slatted foundation or a platform bed. Check the manufacturer’s base guidelines, since using the wrong base can affect the warranty.

How long does an innerspring mattress last?

Well-made pocketed coil innersprings often last about 8 to 10 years, while connected coil beds with thin padding tend to sag sooner. Build quality, body weight, and care all shift that range. Rotating the mattress head to foot a few times a year and keeping it on a supportive base help it wear more evenly.

Can you flip an innerspring mattress?

Only if it is built to be flipped. Most modern innersprings are one-sided, with comfort layers on top only, so turning one over puts you on the firm underside. Rotate a one-sided mattress head to foot instead. A two-sided innerspring has padding on both faces and can be flipped as well as rotated.

Are innerspring mattresses good for side sleepers?

They can be, as long as the comfort layer is thick enough to cushion the shoulder and hip. Side sleepers usually do best between 3 and 6 on the firmness scale, so look for a pillow top, a Euro top, or pocketed coils under softer foam rather than a firm innerspring with thin padding.