1. Cov chav ua noj chav ua noj muaj tag nrho cov tais ua noj 2. Khoom noj Qib Khoom Noj Silicone, muaj kev nyab xeeb thiab noj qab haus huv, tiv taus kub 3. Lub taub hau silicone thiab tus ntoo uas sib txuas tau yooj yim, yuav tsis yog deformed lossis tawg, thiab txoj kev sib tsoo thiab los tiv thaiv kev voj voos