Calfskin or lambskin?

Hello! does anyone know the difference between calfskin (the usual leather of Chloe bags) and lambskin (some new Chloe models are made of this)?
Thanks

Lambskin is thinner and lighter. It also usually has a smoother shiny appearance. Lambskin is also soft and supple. Calfskin is thicker and alittle more sturdy.