Our bottle are of high quality and reasonable price.It is uncrushable and safty for children. It is nontoxicity, have crystal-clear nipple and its bottle is made of glass ,as we know ,glass is more safty than plastic and SIL ,the most important is that the glass is no-broken glass and of  double-deck glass .The skin layer handle can excrcise children 's ability to grasp things ,the most important is that the skin layer can protect baby's skin. The Nano silver antibacterial films can control 650 bacterial and  Leak proof silicon sheet can prevent leckage  .If you have any questions ,just ask me.