Glass Quality Guarantee

Volume:
1.0 L (34 oz.) / 1.5 L (50.7 oz.)

Dimensions:
1.0 L (34 oz.): 4.6(l) x 4.6(w) x 7.9(h) inches

1.5 L (50.7 oz.): 5.5(l) x 5.5(w) x 9.6(h) inches

Material:
Durable, high-quality hand-blown high quality borosilicate glass borosilicate glass

Printed measurement scale

18/8 stainless steel filter and cap

BPA-free silicone air-tight seal

Dishwasher safe

Heat resistance:
Withstand temperatures from -30°C to 400°C / -22F to 752F

Recommended Ground Finesse:
Extra coarse / coarse

Recommended Grounds & Water Ratio:
For 1.0 L (34 oz.): 85g ground, fill water to the MAX line
For 1.5 L (50.7 oz.): 110g ground, fill water to the MAX line

Simple brewing steps, saves you time and money.

Cold bew keeps fresh for up to 2 weeks in the fridge with air-tight seals.

Helps with creating 70% less acidic and smoother-taste coffee than hot brewing.

Brew both coffee or tea, loose-leaf or tea bag.

Protective OVAL-wave design silicone base.

30 Days risk-free return with a full refund if unsatisfied.

Glass Guarantee: because we believe in our premium glass manufacturing process, if it breaks in the first six months of purchase we'll replace it. You just simply have to pay the shipping fees.

Glass Quality Guarantee
We stand by our glassware with a 6-month Glass Quality Guarantee. If your glass breaks, we’ll send a one-time replacement—just email us at support@ovalware.com with your order number and a photo. A $5 shipping fee applies for U.S. mainland; other regions may vary. This guarantee applies only to original buyers or gift recipients who purchased directly from our website or Amazon store. Replacements do not carry a new guarantee.

Manufacturer Warranty
OVALWARE offers a 1-year warranty on products bought directly from us or our authorized resellers, covering manufacturing defects in materials or workmanship. This warranty applies only to the original purchaser or gift recipient and excludes normal wear, misuse, or damage from impact or pressure. For questions, contact our support team for assistance at support@ovalware.com. More on https://www.ovalware.com/pages/warranty-policy

We offer free returns within 30 days of purchase. Items must be unused, in original condition and packaging, with proof of purchase. Returns after 30 days or items that are damaged, used, or missing parts (not due to our error) aren’t eligible.

To start a return, email us at support@ovalware.com—please don’t send items back to the manufacturer directly. You will find all information here.

REFUNDS

Once a return process is established and we have received and inspected your product, we will send you an email to notify you, as well as the approval or rejection of your refund.

If you are approved, your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a few business days.

United States mainland, Armed Forces Americas, Armed Forces Europe, and Armed Forces Pacific:

Standard: 3-5 business days - Starting at $5.00
Expedited: 2-3 business days - Starting at $10.00

**We offer free standard shipping for U.S. orders over $50.00**

Alaska & Hawaii:

Standard: 4-7 business days - Starting at $10.00

International:

Standard: 5-10 business days - Starting at $15.00

How much coffee should I use in my Cold Brew Maker?

For the best results, fill the filter about 5/6 full—adjust as needed based on your beans.

1L Maker: 85g (3oz), ~1 cup or 16 tbsp of coarse-ground coffee

1.5L Maker: 110g (4oz), ~1¼ cups or 21 tbsp of coarse-ground coffee

Can I put hot water in my Cold Brew Maker?

Yes! The borosilicate glass can handle -30°C to 180°C (-22°F to 356°F), making it microwave and dishwasher safe. Just don’t place it on an open flame to boil water or brew directly.

What grind size should I use?

Use a coarse grind for best results. Some fine grounds may seep through—this is normal and ensures full flavor within 12–18 hours. To reduce this, try an extra coarse grind or shake the filter before brewing to let finer grounds fall out first.

How should I clean my cold brew maker's filter?

After each use: Rinse with warm water—outside first, then inside.

Shake out grounds by turning the filter upside down and tapping it gently.

Every 2–3 weeks: Soak in warm water and white vinegar (1–2 hrs), then scrub with a brush.
Dishwasher safe.

What should I do to increase the strength of my coffee?