Had both,HD vinyl and the nylon ones buy the nylon. They are easier to put on cold.

 

I picked up a set from ebay a few years ago and used them in the winter and in the rain. They helped a lot. I have replaced them with with hard lowers now.

 

Many do take them off.

 

Desert Dawgs for me. Have them in the saddle bags put them on when needed.
Here is their website: http://www.leadermotorcycle.com/CTGY/DAWGS.html

 

I ahve had my Airlite lowers for my roadglide and love them. yes I have highway pegs and the slots fit over them. Take a few times of you installing them to get the feel how to proper fit the bars.

 

Mine have the holes for the pegs too (likely all do).

I run 'em, and like 'em!
Fit real nice in the bags, too. Very handy to have on those Autumn evenings when the sun sets and the temp plummets.

I only run them if it's below 60. Not just the motor heat issue (important though).
They act like kites and catch enough wind to eat away some gas mileage.

No real need for them above 55 - 60F and all you are doing is getting them all buggered up with bugs and dirt.

Don't recall what brand they are, and don't really care. They do the job.
No need for a premium fancypants brand. Warm legs don't give a chit what brand the heat is.