Lub zais zis hydration yog ua los ntawm non-toxic, ntxhiab, pob tshab, mos latex lossis polyethylene txhaj tshuaj molding.Nws tuaj yeem muab tso rau hauv txhua qhov sib txawv ntawm lub hnab ev ntawv thaum caij tsheb kauj vab, caij tsheb kauj vab, thiab taug kev sab nraum zoov.Nws yog ib qho yooj yim los sau hauv dej, yooj yim rau haus, nqus thaum koj haus, thiab nqa.Mos thiab xis.