I usually wear tights due to unrestricted movement, but the gym i've been climbing in recently is hot as hell. My alternative is a pair of Prana pants with elastic draw string bottoms i can hike up over my calves. They are also quite hot.. but my gigantic calf radiators cool me down a bit.
If your into leg protection and want to look like a trendy boulderer look no further:
https://organicclimbing.com/collecti...nt=28165320262