1. Nws yuav tsis ua mob rau tus menyuam cov hniav thiab qhov ncauj mucosa. Ib yam li leej niam daim tawv nqaij, nws muaj kev nkag siab zoo ntawm cov kua mis thiab tuaj yeem ua rau tus menyuam lub siab xav.
2. Silicone mos diav yuav tsis khawb tus menyuam tus nplaig me ntsis.
3. Lub diav rawg ergonomic tuav tau yooj yim dua los tuav, thiab rab diav ntev me ntsis yooj yim dua rau khawb cov zaub mov hauv qab ntawm lub raj mis thaum pub cov khoom noj ntxiv hauv lub raj mis.
4. Qhov luaj li cas thiab qhov tob ntawm cov diav mos yog qhov zoo heev. Nws tsuas yog tsim nyog rau tus menyuam lub qhov ncauj, thiab nws yog mos heev. Nws tiv thaiv tus menyuam cov pos hniav thiab qhov ncauj.