Peshutim Mehudarim (Superior Simple Ones) - These make the box of the tefillin out of a single piece as required. They are made with 32 mm sides to the boxes. However, goat skin is used to form lighter weight batim, which when finished look almost identical to the more expensive cowhide type, but they are not as durable. Kosher and proofread by an expert proofreader. Comes with a computer check certificate from Mishmereth STaM and a certificate about the kosher level. These are our customer's favorite choice for Bar Mitzva. Made by Pe'er HaSTaM from Israel. Free Tefillin Velvet Bag with Protective Plastic Bag *If you are a Right-Handed you wear the tefillin on the left arm. *If you are a Left-Handed you wear the tefillin on the right arm. Version: Sefaradi/Temani, for Left Handed