One of my favorite pieces of gear. Polartec makes good stuff. I like these paired with a moisture wicking shirt and the Amazon basics softshell jackets.  Combined you have an effective cheap layering solution that's less than $100. I like to was both with the nikwax tech wash. Just gives it a little extra against the elements . Fleece is often considered second rate next to wool. I do not agree . I would put polartec synthetics up against wool anyday.  Plus if my polartec get wet a can just shake them dry can't do.that with wool.  Don't get hung up on being waterproof your layering solution just needs to shed the bulk of the water . The fast drying synthetics dry very fast.