Shipping & Returns

Shipping

We offer free shipping within the Contiguous US.

Shipping to Alaska is available, with costs calculated at checkout.

Most orders are processed and shipped out of our warehouse within 1-2 business days. Orders within the Contiguous US usually take between 2-7 business days to deliver once they leave our warehouse.

Shipping to Canada is also available with calculated shipping costs.

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Returns

We offer free returns when you opt for Dorai Free Returns + Package Protection program at checkout. For orders that don't include Dorai Package Protection & Free Returns, we'll deduct the shipping cost from your refund.

Want to exchange for something different? Exchanges are on us.

Note: Some items, like final sale items, warehouse sale purchases, and gift cards, cannot be returned or exchanged.

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Compare Colors

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Save 21%
Large Sandstone Coaster fits pitcher and cups - includes 4 coasters.
Large Sandstone Coasters with pitcher and cup protecting table from water rings.
Large Sandstone Coaster with icy drink and table stays dry and protected.
Large Sandstone Coaster: Felt Feet, Quick-drying stone, 40% bigger than standard coasters.
Large Sandstone Coaster with large mug.
Large Sandstone Coasters: 4.5in x 4.5in
Large Ash Coaster fits pitcher and cups - includes 4 coasters.
Large Ash Coasters with pitcher and cup protecting table from water rings.
Large Ash Coaster with icy drink and table stays dry and protected.
Large Ash Coaster: Felt Feet, Quick-drying stone, 40% bigger than standard coasters.
Large Ash Coaster with large mug.
Large Ash Coasters: 4.5in x 4.5in
Large Slate Coaster fits pitcher and cups - includes 4 coasters.
Large Slate Coasters with pitcher and cup protecting table from water rings.
Large Slate Coaster with icy drink and table stays dry and protected.
Large Slate Coaster: Felt Feet, Quick-drying stone, 40% bigger than standard coasters.
Large Slate Coaster with large mug.
Large Slate Coasters: 4.5in x 4.5in

Square Coasters

$46 $36
/
Save 21%
Product Size
Square Coasters
Stone Coaster Set

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Free Shipping

Free shipping on U.S. orders.

Free Returns

When you opt in to Dorai Package Protection.

U.S. Based Customer Support

Need help? Call, text, or message us. Help Center

Quick-drying stone
Quick-drying stone
Eco-friendly
Eco-friendly
High-quality design
High-quality design

Using a coaster, but still finding liquid seeping on your surfaces? Our Square Coasters are the spacious solution for large cups, bottles, or small plants. Crafted from our signature diatomaceous earth, these large coasters quickly absorb moisture, preventing condensation from pooling and protecting your furniture from water damage. Plus, with four felt feet on the bottom, they won’t scratch or scuff surfaces. Whether it’s your nightstand, windowsill, coffee table, or desk, these durable, stylish coasters keep every space clean and protected.

Includes 4 square coasters with felt feet.

Dimensions: Length: 4.5” Width: 4.5” Height: 0.4”

  • Designed to fit oversized drinkware, bottles, stemmed glasses and small plants 
  • Made from quick-drying Diomat®, a blend of diatomaceous earth and paper fiber
  • Felt feet to prevent any damage to surfaces
  • Modern square design to complement your home’s aesthetic.
  • Includes four coasters to keep multiple surfaces clean and protected.
To prevent staining, dab away dark-colored liquids and rinse immediately. Wash regularly to keep your square coasters looking their best.
See More Care & Cleaning

Length: 4.5” Width: 4.5” Height: 0.4”

Build Your Own Set

Build Your Own Set

Build My Set

Pairs Well With

Save With Bundles

Save $40.00
Modern Toilet Brush Holder Two-Pack for additional savings.
Modern Toilet Brush & Holder 2-Pack
$150.00 ( $190  value)
Save $54.00
Slate Clean Home Starter Set featuring Slate Bath Stone, Slate Stone Sink Caddy, and Slate Drying Stone on white background.
Clean Home Starter Set
$149.00 ( $203  value)
Save $25.00
Grey Soap Dispenser and Sandstone Soap Caddy with Holiday Gift Wrap.
Soap Dispenser & Soap Caddy Set of 2
$93.00 ( $118  value)
Build Your Own Set

Build Your Own Set

Create your personalized set of three Dorai products and save 15%.

Start Building
Dorai’s Diomat Stone features diatomaceous earth, a naturally occurring material known for its fast-drying and highly absorbent performance. Without harmful chemicals, its porous design absorbs moisture on contact, minimizing dampness and helping discourage mold, mildew, and odors. The result is a cleaner, drier surface that is easy to care for.
Dries Instantly
Dries Instantly
Prevents Bacteria & Mold
Prevents Bacteria & Mold
All-Natural Material
All-Natural Material
Wine glasses + Large Pitcher on large coasters numbered 1-3 with sangria and fresh fruit.
Designed to fit oversized glasses, stemware, and mugs, these large, square coasters have full coverage for your biggest drinks. Crafted from diatomaceous earth, the coasters quickly absorb moisture to keep your surfaces free from water rings, all with a sleek, modern look.
  • 1
    Quick-Drying Diomat® Stone
  • 2
    Protective Feet
  • 3
    30% bigger than standard coasters

Step 1

Wet the stone surface and spray it with a mild, liquid-based soap to help loosen any buildup from water or pet use. Using an abrasive sponge or cleaning brush, scrub the surface in small circular motions to lift residue and refresh the stone’s natural texture. Rinse thoroughly with clean water, and repeat as needed until the surface looks clean and even.

Read More

Step 2

For stains or discoloration, dampen the area and lightly sand it with a medium-grit sandpaper in a well-ventilated space. This will smooth the surface and restore the stone’s quick-drying, odor-resistant qualities. Allow the stone to dry completely before using it again.

Read More
See More Care & Cleaning Tips

Frequently Asked Questions

Have questions? Visit the Help Center or see frequently asked questions about this product below.

Our Square Coasters are specifically designed to accommodate oversized cups, bottles, and tumblers. Whether you're enjoying a large iced coffee, a water bottle, or a bigger tumbler, these coasters provide ample space to keep your drink secure and your surfaces protected. Perfect for large cups and bottles that traditional coasters can't handle.

Our quick-drying Square Coasters are not just for drinks—they're also perfect for large glasses, vases, or even skincare bottles. The absorbent diatomaceous earth material helps prevent watermarks and condensation marks from damaging your surfaces, making them ideal for a variety of uses around your home. Keep your countertops, vanities, and tables dry while adding a touch of modern style.

Crafted from high-quality diatomaceous earth, these coasters instantly absorb moisture and condensation. The porous material rapidly draws in water, preventing pooling and ensuring your surfaces remain dry and free from water rings. This makes them ideal for everyday use with cold drinks, hot beverages, or even sweat-prone bottles.

Yes, these Square Coasters are versatile and work on a variety of surfaces such as bedside tables, windowsills, coffee tables, desks, and countertops. Whether you're placing them in the kitchen, living room, or bedroom, they provide reliable protection against water damage. The sleek design blends in with any décor while offering practical functionality.

Each set includes four Square Coasters, giving you the perfect amount to protect multiple surfaces in your home. Whether it's your nightstand, coffee table, or a shared space in the living room, you'll have enough coasters to keep your furniture safe from water damage and add a touch of style to your space.

Felt feet are not strictly necessary, but they provide extra benefits for your furniture. They help prevent scratches, scuffs, and marks on your surfaces, ensuring your coasters stay securely in place. Felt feet also make it easier to move the coasters without causing any friction or damage, adding an extra layer of convenience and protection.

Yes, our Square Coasters are equipped with four felt feet. These felt feet are designed to keep the coasters stable and prevent any damage to your furniture. They protect surfaces from scratches or scuffs while ensuring the coasters stay securely in place, even when you move them around.

  • 5 stars: 21 (95%)
  • 4 stars: 1 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
J.B.
Stylish and Functional

The coasters add an element of style while working to protect surfaces from water rings. I highly recommend.

J.B. review photo
Y
Y.S.
Love them!

These coaster are the perfect size and they look great! They absorb liquid quickly. Just what I was looking for.

Y.S. review photo Y.S. review photo
T
T.T.
Love them!

Love the coasters. Very light weight and absorb the moisture from your glass!

T.T. review photo
B
B.
Best Coasters for Clean Living

These are amazing. We used to use pretty gold plated coasters with cute designs but the always collected water and stuck to glasses. These coasters absorb every little drop and they dissolve before ever reaching the surface they’re on. Love the big square design 10/10 recommend.

B. review photo
D
D.J.B.
Absorbent

I love these coasters because they actually absorb moisture when your iced drink is sweating. Then they dry quickly.

J
J.L.

Awesome

J
J.
Perfect!

The size of these coasters are exactly what I’m looking for as I could never find a coaster that was large enough for my 64 oz water bottle that I drink throughout the day. And it’s great to absorb all the condensation that occurs with it. So happy with my purchase!

Y
Y.N.
Love!❤️

These are awesome, it makes everything look so stylish and also protects my bathroom counters.

A
A.R.

Great

K
K.R.
Stylish and Functional

Beautifully crafted, incredibly absorbent. Won’t use another coaster ever! Highly recommend.

J
J.S.

They absorb quite well

K
K.P.
work great

Helps keep tile grout from getting wet from small soap & brush dishes near the sink. Clean lines and neutral color 👌🏼 they work great

A
A.S.
Best Coasters

Coasters are very nice. Subdued color. Size is perfect. Unlike marble, these absorb which is why I purchased. Well packaged for mailing. Fast delivery. Very pleased with product. Recommend highly. Will be repeat customer.

A
A.T.
Nice clean coasters

Nice, well cut coasters. They go well with my home decor. I use them everyday

K
K.
Love them! They look great and are super absorbent

These coasters are great. They go well in any space. I am happy with them

M
M.J.
Love these coasters

They are pretty, effective and on sale a good price

L
L.M.
My new favorite

Love these coasters. They looks so elevated while still functional. I love how fast they dry and they don't scratch my furniture like my previous coasters

J
J.S.
Really great coasters

They're a great size, all different size glasses and even some bottles can be placed on them. They don't make any noise, so you don't have to lay things down too gently. They look sleek and best of all, they absorb liquid instantly.

S
S.M.
Functional and pretty

Very elegant and pretty! Also lightweight and sleek. Helps keep those pesky water marks from staining my counter.

A
A.R.
Simply beautiful

These coasters are gorgeous and elegant! I’ll be buying four more!

M
M.N.
Nice

Nice to have coasters that do not leak through

D
D.
Cossters

Great coasters that soak up the extra liquid from glasses.