Setting a New Standard

Reusable Silicone Mask

A reusable silicone mask, designed for everyday comfort and protection.

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Castle Case Mask Case in Rainbow
Sanitary Stainless Steel

Castle Case

Extends The Life of Any Mask

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G-Series Mask

Reusable Silicone Mask

Regular price $39.99
Unit price  per 
Shipping calculated at checkout.

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Reclaim Your Freedom

Standard Adult sizes

G-Series Mask

Standard Adult sizes

G-Series Mask

We focused on creating a light, soft and comfortable mask, fit for everyday use. The silicone mask base naturally forms a self-suction seal that doesn’t fog up your glasses and allows for high breathability. The mask has no valves or vents. New colors available now.

Valve-free No Glasses Fog Breathable Form-Fitted Eco-Friendly Easy to Clean
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Back to school

G7 Kids Mask

Back to school

G7 Kids Mask

Our G-Series G7 Kids Mask is reusable, breathable and designed to keep your young ones safe. The mask is form-fitted and provides the same protections as our larger masks. Available in our classic blue and hot pink colorways, the G7 is making going back to school a little less stressful. Intended for children ages 7-11.

Ages 7-11 Breathable Easy to Clean Blue or pink Lightweight Eco-friendly
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Provisional Patent

U.S. Patent & Trademark Office

Video Tutorials


Reuseable & Recycable

Single-use plastics are a global problem. CastleGrade™ products embody a mindset of sustainability. Our silicone face masks are reusable, thereby decreasing waste and minimizing the impact on our environment.

Protect Against Smoke

Charcoal Filters

Introducing our activated carbon filters that aid in removing toxins from smoke and fumes. These 4-ply filters have been lab tested to show over 98% filtration efficiency with less than 1% particle penetration.

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Protect Your Investment

Castle Case

Made of 100% stainless steel, the Castle Case offers an eco-friendly protective enclosure that will significantly extend the shelf life of your CastleGrade mask from 2 years to 3 years.

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USA Owned & Designed

CastleGrade is proudly owned and operated from Atlanta, Georgia.

Frequently asked questions

Entrepreneur and business owner Anna Grinvald invented an earlier version of the G-Series in December. Anna’s mother lives in a senior care center in Israel and complained about how typical masks were fogging up her glasses. Ron Grinvald, a former injection mold specialist for several parts on the NASA spacesuit worked with Anna and eventually Dan Castle, owner of Castle Brand Group to improve it. The G-Series filter has recently been by Nelson Labs, Alpha Labs and SMQ Labs and has performed extraordinarily well. 

The G-Series filters have been tested by several third-party labs. Results from Nelson Labs performing the Bacterial Filtration Efficiency (BFE) test have returned over 95% consistently.

Please click on the Science tab to learn more.

As a standard, we recommend purchasing the G9 size. The G8 size is recommended for teenagers and women with small head and face features (70pct of women prefer G9).

Remove the 4-ply filter and place it in the dishwasher. You can also submerge it in boiling water for 2 seconds. If you prefer to keep it clean throughout the day you can wipe it down with any disinfectant.

You can wear the mask for up to 1 week or 32 hours of direct use, before replacing the filter.

Wearing a high protective, silicone mask will slightly alter / muffle the sound of your voice.

We manufacture in several countries including Vietnam, Czech Republic, Germany and China.

Don’t! Keep the mask and buy replacement filters on our website when you are running low or sign up for the subscription so you never run out. We cringe seeing so many masks being discarded after just one day of usage and Mother Nature needs your help.

For safety purposes, once the product has shipped, we consider the mask unfit for use by another customer. Thank you for understanding.