Do these have elastic "sticky" leg...
Do these have elastic "sticky" leg openings?
No - they use the LG "Powerband" compressive grippers, basically a slightly tighter wide band (you can see it in the product photos, bearing the LG logo and name around the leg). They work very well - I've had no slippage up my thigh over 2hrs riding.
For me these have performed better than those elastic "sticky" leg openings, they have never ridden up my leg, i have been using this bib short model for ~2 years.