Designed for Immunocompromised & Sensitive Lungs

We have found that sizing by weight works for the majority of our customers, but we always recommend double-checking your correct size based on our detailed sizing chart here, especially if you are right on the cusp. We cannot accept return/exchanges due to U.S. Health code. If you purchase a mask that doesn't fit, we will be happy to offer you a one-time discount on the next size up. Simply contact us here.

- Small: 45-75 Lbs (20-34 Kg)

- Medium: 75-130 Lbs (34-59 Kg)

- Large: 130-190 Lbs (59-86 Kg)

- X-Large: 190+ Lbs (86+ Kg)

Each mask comes with 2 filter sets (2 right & 2 left). Filters do not come pre-installed. Please hand-wash mask prior to using it for the first time. Each filter set (1 right & 1 left) is designed for up to 48 hours of total wear time. Filters may be worn across multiple uses within that timeframe, as long as they remain dry and breathing remains comfortable.​ Filters should never be exposed to water or washed. When washing your mask, simply remove the filters, wash and fully dry your mask (ideally sun dry), and then reinsert your filters. You can learn more on our FAQ page here. Due to health & safety codes, this item is not returnable. This mask is not a respirator and therefore not intended for use in medical procedures.