To my knowledge no one specifically tested a TYR suit. Now someone may have been using that as their suit they were testing in, which is completely different.
Calf sleeves may be faster. I know one person tested them and they were not but I've also talked to people who tested and found them to be faster. I think the verdict is still Maybe. I suspect it's also individualized. It was on my list to test but I ran out of my allotted time. When I test again they are on the list.
I don't know anyone who has ever tested arm warmers or sleeves. I think we'd have to infer from the suits and predict what may happen. But lots of skin suits have sleeves and we know skin is slow. I think the skin suits that are out there could be much faster given some of the stuff I learned.
I think if you get the texturing correct, especially on the bicep/upper arm area they have the potential to be faster.
Round cylinders are slow and guess what a lot of our arms act like when we are in the aero bars? We know texturing around cylinders can delay boundary layer separation & reduce the size of the wake region.
But I think for now with the arm sleeves that are out there it's a roll of the dice. This would be something interesting to test though. If you have specific ones you are thinking about PM me those brands. When I test I can put those on the list. I'll do some runs wearing them if I have time.
When it's 40-50F out and if it's going to be raining, maybe especially if it's going to be raining, I think staying warm may be more important than shivering.
Brian Stover USAT LII Accelerate3 Coaching Insta Twitter