SLATS, NOT A PANEL

Without adequate support, a mattress sags into the gaps beneath it and develops impressions that don't recover. Our 1.5-inch Bunkie Board gives it a firm, flat surface to rest on instead: solid wood slats 2.5 inches wide with 2-inch gaps, under a breathable 100% organic cotton canvas cover. Two inches is the number that matters. Your mattress warranty allows slats up to 5 inches apart — this closes them to 2, which distributes weight more evenly and helps the mattress hold its shape over years rather than seasons. It's the low-profile answer where people usually reach for a box spring, delivering the same flat support without the added height and without the flex that makes a box spring the wrong base for an Avocado. And unlike bunkie boards built as a single sealed panel, a slatted design lets air keep moving beneath the mattress, which helps manage moisture and extends its life. A must for trundle beds, bunk beds, daybeds, wire frames, and any frame whose slats sit too far apart to support a mattress properly.

 

NATURAL + DURABLE SUPPORT
NATURAL + DURABLE SUPPORT
SOLID WOOD SLATS

SOLID WOOD SLATS

Plywood, particle board, composite. That's what you'll find inside most bunkie boards — usually as a single sealed panel that traps heat against your mattress and can warp as moisture and temperature shift. We build ours from high-grade Spruce-Pine-Fir, sourced in North America, cut into slats 2.5 inches wide and set 2 inches apart. Solid wood doesn't delaminate the way composite does. And the slats let air move between the mattress and its base, which helps manage moisture and adds years to the mattress above it.

 

ORGANIC COTTON COVER

ORGANIC COTTON COVER

Most bunkie boards are wrapped in synthetic fabric that doesn't breathe, and it's usually bonded to the wood with adhesive. We use 100% organic cotton canvas instead, and we attach it with steel staples—no glue, no bonding agents anywhere in the board. Organic cotton is grown without synthetic pesticides or fertilizers, on land managed to protect soil health rather than deplete it. Canvas is a tight, hard-wearing weave that takes being stretched over a wood frame and stays breathable doing it.

Radically Honest Specs

Dimensions & Weights

Twin: 38″ W x 74″ L x 1.5" H — 21 lbs.
Twin XL: 38″ W x 79″ L x 1.5" H — 21.5 lbs.
Full: 53″ W x 74″ L x 1.5" H — 30 lbs.

Winner of the 1% for the Planet Pinnacle Award.
Certified B Corporation — "Best for the World" Winner.
GREENGUARD Gold certified for safe emissions.
Formaldehyde-Free Claim Verified by UL Environment.

Proudly made in our Avocado facility in Tecate, Mexico.

Slatted Design for Maximum Support & Airflow

Most bunkie boards are flat pieces of particleboard or plywood intended to go between your mattress and the surface it sits on. Intentionally, our Bunkie Board is built differently. It is made of solid wood slats and wrapped in GOTS-certified cotton to provide the needed structural support while also allowing airflow. Proper circulation helps your mattress breathe naturally and sleep cool. Our Bunkie Board can be used on any type of sleep setup — on top of a box spring, foundation, platform bed, or bunk bed — anywhere where additional support for a mattress is insufficient. It can be used on top of existing slats if additional support is needed, or replace the slats system entirely. It can also be used with our Coconut Coir Mattress Pad, to reduce squeaking on an existing bed frame or to maximize airflow.

Shipping & Delivery

Our bunkie board ships via UPS® in convenient, compact packaging.

GOTS-Certified Organic Cotton

We use GOTS-certified organic cotton canvas in a soft, natural color. Responsibly and ethically sourced from India, we also use this durable textile to finish our award-winning mattresses. Our organic certified cotton has been tested to ensure it contains no harmful substances.

Climate Label Certified

The Climate Label is a trusted mark of corporate climate leadership. Companies that earn the Climate Label have been verified as meeting high standards for climate performance, transparency, and accountability. Products and services from certified brands are developed and delivered with a focus on reducing greenhouse gas emissions over time. They have long-term climate targets backed up by immediate funding and actions.

California Residents

We operate our own woodshop — in a facility completely separate from our mattress factory, in Los Angeles — which produces wood dust. Read California's required Proposition 65 warning for wood dust.

Project Zero Waste

We're proud to be certified by UL Solutions for a landfill diversion rate of 85%. That means only 15% of our manufacturing waste ends up in the landfill — we upcycle or recycle the rest. Since we began Project Zero Waste in 2020, we've been a pioneer in the space, increasing our waste diversion rate by 33%. We are the first mattress and bedding company to achieve this. But we aren't done yet. Our goal is at least a 90% diversion rate. Read more about Project Zero Waste.

Return Policy & Warranty

All bunkie board sales are covered by our 100-night sleep trial, with the exception of any defects in workmanship. Defects in workmanship are covered by our 10-year warranty. Please note that this product includes natural wood that may contain blemishes, knots, or other scars in the wood as a testimony to its age, noble character, and singular beauty.

Frequently Asked Questions

A thin, rigid slatted panel that sits between your mattress and its base to give the mattress a firm, flat surface. Ours is 1.5 inches, so it adds support without raising the bed — that's the whole point of one. It's the usual answer for trundle beds, bunk beds, daybeds, and platform frames whose slats sit too far apart to hold a mattress properly. Our full guide to bunkie boards covers slat spacing, coverage, and how to use one correctly.
Either can work, depending on your frame. Adding slats is fine if they're at least 2.5 inches wide, solid wood rather than thin plywood strips, and your frame has a rail system to hold them. The catch is that loose slats shift over time, so spacing that measures right today may not a year from now. A bunkie board is the better answer when your frame has no ledge to hold added slats, when the existing slats flex under load rather than just sitting too far apart, or when you want spacing that can't drift — ours is a fixed frame, so the 2-inch gaps stay 2 inches. Either way, the frame underneath still has to carry the weight.
Yes, and platform frames are the most common reason people buy one. Many platforms use slats spaced 4 to 6 inches apart, which is wide enough that a mattress settles into the gaps and develops impressions that don't recover. The bunkie board rests on those slats and closes the spacing to 2 inches without raising the bed. If your platform already has a solid deck, or slats less than 3 inches apart, you don't need one. Our support guide walks through how to check your frame.
Three different things. A bunkie board is thin and rigid — 1.5 inches — and gives the mattress a flat support surface without adding height. A foundation is taller, 3.5 or 7.25 inches, and both supports the mattress and raises the bed. A box spring is spring-based and flexes under load, which is why it isn't recommended for an Avocado mattress: that flex reduces support and can void the warranty. If you're replacing a box spring and want to keep the bed low, a bunkie board is the swap. If you want the height back, choose a foundation.
Plywood is what most bunkie boards are built from, and it's the common DIY substitute. Three problems with it. Plywood delaminates — the glued layers separate under sustained load and humidity. A solid sheet seals off airflow beneath the mattress, trapping moisture in the one place you don't want it. And engineered wood is a known source of formaldehyde, which comes from the adhesive holding those layers together. Ours is high-grade Spruce-Pine-Fir cut into slats: solid wood with no adhesive anywhere in the board, 2-inch gaps that let air move, and UL® Formaldehyde-Free Claim Verification to confirm it. If you already have plywood under a sound frame, it's better than nothing. It just won't last as long, breathe as well, or be as clean.
Yes — GREENGUARD Gold certified and UL® Formaldehyde-Free Claim Verified. GREENGUARD Gold tests the finished product against strict VOC limits written for bedrooms and children's rooms, which matters for something that spends its life a few inches beneath you. Formaldehyde-Free verification matters because the board is wood: composite panels off-gas formaldehyde from their adhesives, and ours contains no adhesive at all. The cotton canvas cover is attached with steel staples, not glue.
Yes. A bunkie board supports any mattress — latex, hybrid, innerspring, or memory foam — because its job is the surface underneath, not the mattress itself. Memory foam benefits more than most: it has no internal structure to bridge a gap, so it conforms to whatever is beneath it, and a frame with wide slats will eventually show through as ridges. A slatted base won't solve memory foam's heat retention on its own, but it moves more air than a sealed panel does.
1.5 inches thick in every size, currently available in Twin, Twin XL, and Full. Queen and King are on the way. All three sizes use the same build — solid wood slats 2.5 inches wide with 2-inch gaps — so only the footprint changes. Twin and Full frames need four leg supports underneath; that's a mattress warranty requirement, and adding a bunkie board doesn't change it.
No — it needs a frame. A bunkie board is the support surface, not the structure, so it has to rest on a bed frame or platform that supports it around the full perimeter. Putting a mattress or a bunkie board directly on the floor restricts airflow underneath, which invites moisture and mold, and it voids the mattress warranty. If you want a low bed, a low-profile frame plus a bunkie board gets you there without the risk.