Excellent as a base layer under my drytop. To date I have paddled over 1000 miles in this top this year, and no physical signs of wear. This is by far one of the best pieces of gear I have in my arsenal. The Hydroskin line works well for the transition between summer and fall as well as winter and spring. Just right for those days that the wet suit is overkill, but you don't want to wear splash gear because you know going to swim. The entire Hydroskin line is where it's at...

The NRS Hydroskin is just great. The heavy insulation in combination with a waterproof shell jacket keeps you warm in almost any weather condition.

Hydroskin products are all high quality. This piece has short arms. I have a 34 inch shirt sleeve and normally buy a large in a hydroskin product. I needed an xxl for the sleeve length in this product.

This shirt is awesome. I just used is on a 50 mile section of the Dolores river in Colorado and it worked perfectly. I was in a kayak and the water temp. was probably in the low 50's with the air temp. being in the high 80's. I would get a little overheated while getting ready to be on the river, but once I was in the river with that cold water splashing on me, it was perfect. Also, it dries really quickly.