MISSIONMen's VaporActive Proton Short Sleeve Running T-Shirt, Fiery Red/Iron Gate, Small

This shirt, the Proton, is one of the very few Mission clothing items I didn't own previously. When ordering it, I saw Mission suggested moving one size up from normal Mission clothing so I followed that. While the XL does fit me fine, I'm fairly sure I could've gotten away with the large. Either way, I absolutely recommend this shirt, if you don't want to read my full review.However, I'm going to include exact measurements below and directly compare it to the Stratus, Mission's other running specific shirt and the one they don't recommend moving up one size.Measurements:Proton size XL(This review and the one Mission recommends one size up):Pit to pit- 22.5 inchesTop of v collar to bottom front- 25.25 inchesTop of collar to bottom back- 29.5 inchesStratus(Mission's other running shirt and the one Mission says runs to size):Pit to pit- 21.25 inchesTop of v collar to bottom front- 24.75 inchesTop of collar to bottom back- 29 inchesSo what does this all mean? I directly compared the two because as I said, Mission says you should move up one size compared to the Stratus. The takeaway from the above measurements is that the different between the two is the Proton at XL is about 1 inch wider all the way down, about .5 inches longer, and the sleeves are about 1.25 inches longer, compared to the size L Stratus.Does that mean you need to move up a size? Maybe. The Stratus fits me well but it's definitely very form fitting. The Proton from this review fits me well too, but the fit is slightly relaxed. I'm a 44 inch chest, 195-198 pounds, 6'1" tall with a slightly long midsection. I think it comes down to do you want your shirts, close to skin tight or do you want them to be slightly loose? For me, the answer is sometimes yes, sometimes no.Summing it up:If you're a 44-46 inch chested person and you like your running shirts to fit well but not be skin tight, yes, I would size up one and go with the XL like I did. While my Stratus in a L definitely fits me and I do like to use it in many situations, I have to admit the slightly longer sleeves, slightly relaxed chest and .5 inches of extra length of the Proton is very nice.Also, to be frank, I would also suggest moving up one size in the Stratus as well, even if you are my measurements or close because I suspect an XL in a Stratus would probably be a 23 inch pit to pit measurement, or .5 inches larger in the chest than an XL Proton. In other words, I strongly suspect if you directly compared a size large Stratus to a large Proton and did the same with both as an XL, you'd come away with the Stratus being .5 inches smaller in width, slightly relaxed sleeves and .25-.5 inches longer. Very slight but meaningful differences.I hope all of this doesn't come off as jumbled, I just suspect others may have the same question I did:Does a Proton run small compared to a Stratus? The answer is absolutely, but not by much.* Bonus, if you're my measurements and looking at the Alpha, buy the XL instead of the large if you like a relaxed fit and ESPECIALLY if your midsection is on the longer side.With all of this said, if you've stuck with me this long, again, I absolutely feel comfortable recommending this for running or any aerobic activity, just watch the sizing!Cheers!

This athletic Tee is of a slim-fit nature. It's true-to-size and if you would like a looser fit, you should consider buying a size larger, as advertised.It is well-designed and simple. The stitching is very good and so too are blending of colours. I love the simplicity of the design and the contrasting inserts on each side.One reviewer mentioned that the textured material is easily snagged. I believe it to be true although I have not snagged it yet.It seems as if it really does attract and seal in body odour until the next wash.It was easy to unwrap, so I shall say that packaging was frustration-free.

Brilliant color combo, one that others will be sure to notice. Depending on your shape, I think it might run a bit ( not a lot) small. I think Mission makes nice things, and this is indeed nice! No problem washing, and it is practically dry when you remove it from the washer, if you can imagine. No fading, no shrinkage.

The shirt is probably a little shorter than some might like. It falls right below / on the hip...those that are used to a longer shirt, be warned.

Nice color but size is a bit tight for regular sizing. I'd suggest to get a size bigger if you like some extra room to move around in this.

Bought the next size up because other reviews say the sizes run small- BUT even with one size larger the thing fit like panty hose on a woman.

great shirt. comfortable. breathable. fits great. looks great. sizing as expected. 5-8 fit 185 big chest and arms, and size L looks great. Shows off the guns for sure. lengthwise not too long - which I hate when I'm working out - but also not too short. kinda just right. will order more for sure

I absolutely love this shirt!! It is of great quality and looks as good or better then Nike or Xarmor.I'm 6 ft tall and weigh 195 and the XL fits just great. I plan to buy more Mission shirts before they catch on and the price goes up.

Fue un regalo para mi novio y le encantó. Compré una talla arriba para que le quedara un poco holgada y se ve muy bien. XL

Son tallas Americanas, usualmente soy M, pero debí pedir CH, la M me quedo muy grande y el color es más fosforescente de lo que me gustaría, no está mal, solo a mi no me gusto y no supe elegir talla.

Una marca que sin duda me ha llamado la atención pero no eh logrado tener muchas prendas. El común denominador en mi caso particular es que vienen muy entallada. En el caso de puma, adias, nike, under armour con una talla grande suficiente, pero los 4 artículos que eh comprado de esta marca son muy entallados, así que buscaré una talla XL para ver que tal y espero quedarme con algún producto, mi esposa la compra mucho por eso mi inquietud de conseguir las mías

No es holgada como la foto, es un producto slim fit. Sin embargo la calidad de la prenda es excelente.

Su ligereza, la compre para mi esposo y le quedó como si se la hubiera medido en tienda... además es ligera, se ve cómoda y fresca