Peshutim Mehudarim (Superior Simple Ones) teffilin have boxes made from a single strip of hide as required, and the boxes are 32mm X 32 mm on each side. Goat skin is used to form lighter weight batim. When finished these look almost identical to the more expensive and more durable cowhide tefillin.
Certified kosher and correct after proofreading by a qualified expert.
Each set is accompanied by a computer check authorization certificate and a certificate of the kashruth level.

Many people find these tefillin an ideal Bar Mitzvah gift.

Professionally made by "Peer Hastam".

Nusach Ktav Ari or Beis Yossef:
Here are some universal guidelines showing which communities traditionally use each ktav:
Ashkenaz Beis Yossef - is usually used by those adhering to the Ashkenazi tradition, originating in Germany, England, Russia and Lithuania.
Ashkenaz Ari, Ari Zal (Nusach Sefard) - generally used by those following the Hassidic Sefard tradition from Eastern Europe, including Poland, Galicia, Hungary, Romania and Slovakia.

Hand Strap Wrapping Direction:
Inwards - Beit Yossef, Most Ashkenazim wear the knot to be tightened (not to be confused with the knot on the base which is permenently tied and always worn on the inside, facing the heart) on the inside and wrap inward.
Outwards - Ari (Nusach Sephard) Ashkenazim and all Sephardim wear it on the outside and wrap outward.