3Z provides practical solutions for the treatment of respiratory diseases. The first project is a novel device to treat mild to moderate obstructive sleep apnea syndrome (OSAS). OSAS is a disorder with very high prevalence and current treatment methods are not embraced by patients due to discomfort and adverse effects which they cause. We offer a comfortable, user-spesific, portable, and efficient mouthpiece for the treatment of OSAS. The clinical trials of the prototype will be finalized soon. So far, the mouthpiece showed %80-%100 efficiency in the reduction of number of the apneas amongst the registered patients.