These are what I use Shaun for landscaping. I like how the fabric breathes but has rubber coating to protect. Fairly flexible enough for my type of work. Keeps the PVC glue off my fingers as well when I do irrigation work.
I buy a cheaper brand than these - I think the last ones I bought in bulk worked out to about $1.00 a pair. Yes, I throw them away when they get too worn.
I buy them on eBay.
HTH!