4" wide of gloriously thick and soft leather, like putting on an Italian suit! If your bass is heavy, this is the strap for you. My 9.5 bass feels like a mid 8! Italian is one of the only companies that make a 4" wide strap. Thank God they understand the needs of bassists!
Buying ANY other strap is just wasting time and money. I ditched my top of the line Levys for these. I am a retired bass professor and can't hold up a heavy bass for long (several car accidents). I would flip out if I went to a gig without my Italia strap! Buy these straps, full stop.