Tefillin "Gasot, Ohr Echad - These are shaped out of one thick piece of cowhide. These Battim (casings) are very strong and long lasting. They will retain their shape and squared corners throughout many years of constant use. Even when they become old and worn they can be restored to look as good as new. " For more information about Tefillin please call us at 1-888-342-4537 (Eichlers)