This is Han from Be Healthy Team.
Thank you for your review. We are sorry to hear that our mask did not satisfy your need. As people have different facial structure and size, some masks may perform less while others may perform great. We do offer variety of brands and models of masks to help customer find their 'perfect' mask.
If you would kindly contact us at email@example.com, we will be more than happy to assist in finding the best compatible mask for you.