I have a pair of older Brooks tights size XL with 34 inch inseam, so any of your tights have 34" inseam?

Hi Keary! Unfortunately, we do not currently offer men's tights with a 34" inseam.

What is the material makeup for these pants?

Hi Andrew! The Source Tight is made from DriLayer HorsePower 78% Polyester, 22% Spandex.

do they have a functional fly or no fly?

The Source Tight does not have a functional fly.

Do these have a drawstring at the waist?

Yes, they do have a drawstring at the waist.

Are the inseams on all of these really 32 inches? That doesn't help those of us closer to Des's height! ;)

Hi Kevin! That's correct, all the Source Tight sizes have an inseam of 32 in.

What temperature are these tights designed for? I'm looking for tights to wear in 20 degree temperatures.

Hi Chris! The Source tight is great for colder conditions. It's hard to say what temperature these are ideal for as this varies from person to person. We do have our Run Happy Promise, a promise if you are not satisfied with our products, you are more than welcome to return it for a refund within 90 days from purchase.