These shirts have a great fit and GREAT for packing but getting your head in and out of this shirt is a job in itself. Buy at least one size oversize, I started with mediums but couldn’t get my head in! Ended up in a X-LG just so I could get it over my head. Not sure what the Salomon folks were thinking... maybe they should TRY THEM ON THEMSELVES. There’s nothing 'fast' about this tank, its a pain in the keester, I dread trying to take this thing off. On the upside, this site’s returns / exchanges are fast easy and seamless, best in the business.

This mesh shirt is 1.5 oz lighter than my Patagonia silk weight tees (both size large). It wicks just as well, and breathes better. It has a close fit but I wouldn't mind if it was 2 inches longer. It does have a tight, non-elastic neck, but gets better after you use it a few times. The material is subject to pack strap abrasion, but I can forgive this because of the weight. I give it a 4.5 as almost perfect. These are my favorite summer base layer/shirts.

A good, lightweight, moisture wicking shirt but you might want to reconsider unless your head circimference is more than 20 inches. I bought a size large and I really have to work hard to get my head through when I put it on and take it off. My head size i 7 3/8in. I give it a plus for being lightweight and a big minus for the non-elastic head opening.