Over the years climbing gear and clothing has changed for the better. Things are lighter to carry, eaiser to use, more comfortable to wear etc.
What one item do you think has been changed in some way for the better?
I think the 02 cylinders.
Back in Mallorys climbing days 1 cylinder weighed around 10LBS, today they weigh around 7LB, it might not seem a big difference but I bet it is if you were ...