The Undershirt Sweat Challenge: Vdri Moisture Wicking Mesh Polyester Undershirt
Here’s another addition to the moisture wicking vs. cotton undershirt sweat challenge.
If you’re a regular reader, you know what this is all about. Nuff said
If not, check out this post: Will sweat will reach an outer layer of clothing faster if you’re wearing a moisture wicking undershirt or non moisture wicking undershirt.
The test subject: Vdri Mesh Polyester Moisture Wicking crew neck undershirt. Note: This is the newer fit version of the Vdri undershirt that is about 1″ longer and about 1″ narrower than the original one I reviewed some time ago.
The test: Same 10K cardiovascular work out on the elliptical while wearing two layers of shirts. First layer is the Vdri crew neck undershirt, size medium. The fit of this medium Vdri undershirt is very similar to the large Execwear high crew neck nylon moisture wicking undershirt that just underwent the Sweat Challenge last week and the medium Campbellsville polyester moisture wicking t-shirt that I worked out with the other day (Sweat Challenge write-up coming soon).
Here’s a quick comparison of the measurements (laying flat) of the shirts that have undergone the Sweat Challenge:
- Execwear large: Length = 30″, Width = 19.5/20″, High Crew Neck
- Vdri medium: Length = 28″, Width = 20.5″, Crew Neck
- Campbellsville medium: Length = 29″, Width = 20.5″, Crew Neck
- Duluth large: Length = 30.5″, Width = 21.5″, V-Neck
- Alfani large: Length = 29.5″, Width = 22″, V-Neck
- Coolmax large: Length = 28″, Width = 22.5″, V-Neck
Second layer was Breakwater 100% cotton t-shirt from Target (pictured here).
Initial Results: There was a stain that measured roughly 8.5″ wide and about 5″ high on the center front of the outer t-shirt, directly under the collar. Comparatively, this Vdri crew neck undershirt let more sweat through than the Execwear nylon undershirt that roughly had a 4″ round sweat stain in the same area.
The rest of the outer t-shirt had about the same sweat marks as all of the other undershirts (light marks around the collar).
Now, one could suggest that the Vdri undershirt actually performed better than the Execwear from a moisture wicking point of view — that is transferring moisture away from your body to the outer layer where the sweat can evaporate.
However, the Sweat Challenge comparison is about how different undershirts perform in letting sweat reach your outer shirt. The less sweat that reaches your outer shirt, the better. In this case, it appears that the Vdri crewneck performed about the same as the other v-neck undershirts in the challenge, but not quite as well as the Execwear high crewneck undershirt.
In revisiting a question I presented in the Execwear write-up:
It’s hard to tell exactly why this [the Execwear] undershirt seemed to perform a little better than other the other undershirts. Was it the closer fit, the fabric blend, or a combination of them both? I couldn’t honestly tell you, but as I test more undershirts, hopefully we’ll find a pattern.
Now, considering I’ve tried to keep the test conditions nearly identical, and the fit is about the same betwen the Vdri and the Execwear, one could postulate that the nylon blend fabric used in the Execwear undershirt performed better than the Vdri mesh polyester fabric overall from the Sweat Challenge point of view.
However, this does not imply that one undershirt is better than the other. The Vdri mesh polyester undershirt performed about the same as most other undershirts that have been part of the Sweat Challenge so far.
Thanks for reading!

