I've always been climbing in shorts, because no pants were ever stretchy enough or would always rip in the crotch when doing splits.
After falling and scratching my leg on volumes one too many times, I found these pants and thought I'd give them a go.
Worried as I am, I spent a lot of time trying to figure out what size I was and how tight or baggy the pants needed to be. I was 189 cm and 104 kg (not a lot of muscle, dad bod vibe) and I eventually settled on XL.
As it turns out, I didn't have to worry so much, as these pants are incredibly stretchy. The waist stretches really far, without being loose in its unstretched state, and even half a year forward when I've reached 92 kg with a more muscular build (most other pants no longer fit well and require a belt), these pants still fit perfectly.
When climbing, these pants stretch effortlessly with every move you make. I can guarantee you that the pants are way more flexible than you are (unless you are some kind of jelly-human), so you don't have to worry about any limits to your movements or any ripping in the crotch.
Temperature wise, the pants are really cool. They breathe very well, and generally provide close to no warmth, rather the opposite - keeping you cool, and making you wear an extra pair of pants on top of these when walking to the gym during winter.
I've got a sweaty behind, and these pants (gray color) does not display this to my fellow climbers. However, when sitting down on the chalky matt, the pants provide a nice imprint of my sweaty behind on the matt when I stand up, a testament to the breathability of the fabric.
Now I'm in a position where I never climb in anything except for these pants, and I really don't have a need to buy any other pants, but still I really want to get the highballer pants just for the variation, style and comfort.
Get these pants!