The Canterbury Vapodri woven gym short is a really great product.
They have an absorbent waistband, designed to catch sweat from your lower back, there's zip pockets with a slim zip, so you're not even really aware of it when working out.
The fabric is Canterbury's Vapodri, which wicks sweat to keep you cool. It also dries quickly so you can get the shorts washed and dried quickly for their next use.
On top of all that, these shorts are lightweight and move with you, keeping you cool and mobile.