Product Features

No Sharp Edges, and a Liner in Every Sandbox

There are no sharp edges anywhere on the sandbox. Every composite board is finished clean on all four sides, so there is nothing to cut, scrape, or catch on where children lean, climb, and rest their hands. The capped surface stays smooth season after season instead of weathering into rough grain the way cedar does.

A ground liner is included with every sandbox, so your sand stays separated from the soil underneath and out of the mud. The boards themselves are a food safe composite of recycled HDPE and natural wood fiber. They will not rot, warp, or splinter, and they resist insects and termites without any chemical treatment.

Every Board Diverts 97 Bottles from Landfill

Each four foot composite board is manufactured using the same amount of recycled plastic as 97 single use bottles. The material blend is 38% recycled HDPE and 62% wood fiber sourced from certified, sustainably managed forests.

That means a play space your kids will use for years is also keeping hundreds of bottles out of the waste stream, without giving up the look and feel of real wood.

A Perfectly Fitted Cover That Does Three Jobs

The cover is cut to the exact footprint of the sandbox, so it sits down over the walls with no gaps, no sagging, and nothing left exposed. It is not a generic tarp thrown over the top.

Closed, it seals the sand against cats, leaves, and other unwanted visitors between play sessions. The hydrophobic fabric sheds rain instead of soaking it up, so the sand underneath stays dry and ready to use.

Choose the telescoping canopy option and the same cover lifts up on adjustable poles to become an open shade canopy, keeping the sand and your kids out of direct summer sun while they play.

Protected by Our Limited Lifetime Warranty

Register your sandbox and the composite boards are covered by a limited lifetime warranty, or five years without registration. The cover or canopy carries a one year warranty.

These boards are engineered for real backyard life. They shrug off mowers and string trimmers, hold their color and structure through repeated freeze and thaw cycles, and stand up to sun, rain, and everyday play without cracking or falling apart.

Ships Free

Enjoy free shipping on all Frame It All sandbox orders over $300 shipped anywhere in the continental United States.

A Safer, Smarter Sandbox

Built for Play, Built to Last

Soft, Safe Edges with no sharp corners or splinters, so kids can lean, climb, and play worry-free.
Rust-Free, Rot-Proof made from composite materials that won't rot, warp, crack, or splinter like a traditional wood sandbox.
Sustainable Mix. Cap Composite made from recycled plastic and sustainably sourced hardwood fiber.
Easy, Tool-Light Assembly Pre-cut composite boards and sturdy brackets snap together quickly. Stack boards to add depth or expand the play area whenever you like.

Covered, Shaded, and Protected

Every sandbox includes a protective cover that keeps neighborhood cats, pests, and insects out while keeping the sand clean and dry between play sessions. A bottom liner is included with every sandbox to separate the sand from the ground below and help it drain. And the telescoping canopy poles extend to cast cool, welcome shade on sunny afternoons.

Reversible DuoTone Boards

Our sandbox boards feature a distinctive DuoTone Design, giving you the freedom to choose the color palette that fits your yard. Select a single color for a clean, uniform look—or mix and match board colors to create accents, borders, or visually striking patterns.

Expand, Stack, & Customize with

Frame it All

Installation Manual & Included Parts

Plastic Brackets

Reliable quality
Great value for money
Standard Warranty

Best for

Homeowners looking for reliable quality

Maximum Strength

Metal Brackets

Premium materials and finish
High Load Capacity
Extended Warranty

Best for

Those seeking maximum durability and performance

Looking for Samples?

Order Samples

Our Warranty Promise

Backed by a 20-Year Warranty– Built to Last Without Rust, Rot, or Wear.

View warranty details

Need Help Designing Your Play Space?

Contact our Team of Design Specialists

Help Me Design

Frequently Asked Questions

Answers to Your Questions About Modular, Durable Composite Sandboxes

What is the sandbox made of, and is it safe for kids? +

Every board is built from our Cap Composite—a blend of recycled plastic and sustainably sourced hardwood fiber. It won't rot, rust, or splinter, and the soft, rounded edges mean kids can lean, climb, and play worry-free.

Does it include a cover or canopy? +

It depends on the model you choose. Several of our sandboxes include a protective cover and/or a telescoping canopy for shade and to keep sand clean and dry between play sessions. Check the product options and title above for what's included with this configuration.

How much sand does it hold, and is sand included? +

Sand capacity depends on the size and depth you select. Play sand is not included, so you can source the amount and type that works best for you. Stack additional boards any time you want a deeper sand bed.

How hard is it to assemble? +

Assembly is simple. The pre-cut composite boards and sturdy brackets connect with minimal tools—no complicated measuring or cutting—so most families can have their sandbox built in an afternoon.

Will it hold up outdoors year-round? +

Absolutely. Our composite boards are engineered to resist sun, rain, and freeze-thaw cycles without warping or fading, delivering long-lasting performance in any climate.

Can I expand or reconfigure the sandbox later? +

Yes! The modular design lets you add boards to grow the footprint or stack boards to increase depth, so your sandbox can adapt as your kids—and your yard—change over time.

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4' x 4' Composite Square Sandbox - 2 Inch Profile