The Louis Garneau Lemmon 2 jersey has the thinnest, lightest and coolest material I've found in a jersey. Other users have said the same thing. The material feels different from most poly blend fabrics -- it's closer to the finest thin soft cotton or merino wool. Nothing at all like the usual laminated jersey materials that have a woven outer fabric and porous but slicker, tighter weave inner fabric.

The fit is snug. The fabric stretches and doesn't feel confining or like compression material. Perspiration does print through, which is a tradeoff for a cooler material. My other jerseys don't print perspiration as obviously, but the material isn't as cool in brutally hot Texas summers (several 100+ F days last summer). It air dries quickly while I ride.

I've worn only the short sleeve version, without using any sunscreen underneath. I tend to burn pretty easily but saw and felt no penetration through the thin material. I did use sunscreen on my bare arms, neck, etc.

The long sleeve version isn't discounted right now but is still a good value at full price. I've tagged the long sleeve version of this jersey on Amazon and am waiting to see if it pops up discounted.