Royal Racing.

I've had a pair of Esquire for a few seasons and they are my go-to hot weather shorts. They are thin but don't rip, and they have vents you can zip open or shut. 2015 also adds a waterproof pocket for your phone - my 2013 model don't have that.

Apparently the Stage is a new short for 2015 that has similar features and a slightly lower price. Probably the material is a little heavier and cheaper.

They both have adjustable waist which is a really nice feature, just about must-have, in a baggy outer short.