Cotton/nylon blend fabric?

My son has a couple pairs of RTW shorts made from a 70/30 cotton/nylon blend, and I love it - it doesn't stain or wear as badly as his 100% cotton clothes, it dries more quickly than 100% cotton, and yet it feels softer and more comfortable than 100% nylon/Taslon. I've looked around online, but I can't seem to find much. Mood has a few, but mostly they're awfully fancy for toddler shorts. Rose City Textiles seems to have three options, but two of them are waxed. That might be ok - I'm going to order swatches. I've been searching for cotton/nylon blends and cotton/Tactel blends - is there maybe some magic search term I'm missing, or another outdoor apparel fabric seller I'm missing?