I have Zoot compressoin socks and Zensah calf sleeves.
I got the Zoot socks because I had varicose vein surgery in my left leg a couple years ago, and they are coming back, and that leg swells. I wear them during my long runs to prevent the swelling, and hopefully, keep more veins popping out
I definitely feel that they help keep my legs feeling fresher during those long runs.
I got the Zensah calf sleeves to wear during races. They can be worn during the swim, so no need to waste time putting them on in T1 or T2. I used them at my recent half iron race, and they were comfortable, dried quickly, did not cause any chaffing, and stayed put during the race.
As far as compression, the Zoot socks provide better compression...I think they are medical grade. I can tell that they hug my legs tighter and feel really good to wear. I will wear those during my IM in the fall, putting them on in transition. For IM, I'm not going to care about my T times, and want the better compression for that long day.
The calf sleeves are comfortable enough, slick enough to swim in, but definitely are not as compressive. Will wear those for OLY and HIM races. Sprints, I won't wear anything.
As far as heat - I have worn both on somewhat hot days
(85 degrees and humid
). They are hotter than nothing at all
(bare skin
). But, they are not uncomfortably warm, and so I feel it's worth it. Have not yet run in a super hot day yet this season!
I do not wear either for recovery. I guess I should try that, but I do feel like recovery is better in terms of less pain in my joints and muscles after runs... simply because I have worn compression socks during the run, so there was less build up of bad stuff in my veins during the run.