Sporran chain vs. Sporran leather strap

[JakobT]

can someone explain chain and strap? im confused here.

Sporran chains don't go all the way round. They usually consist of a short leather strap with a buckle to allow for length adjustment, with lengths of chain fastened to the ends with triangular D-rings. When the chain is in place, the leather strap part is invisible from the front.

A strap, however, is just a strap with a buckle, like a very narrow leather belt.