Brooks aren't generally known for their light weight, nope...

But I would bet someone has found a "T" shaped saddle that *is* light.

(I have the Brooks B67 with springs. Yeeehawwww! You can get muscles just carrying that critter home from the mailbox! Most comfy saddle for my hind end I've ever found, so I bought a 2nd one for my other bike too.)