I bought three new pairs yesterday, all £10.00 each and all 100% cotton. I had to be watchful wading through the piles as most of the newer stock were only about 55% cotton with a polyester/viscose blend making up the balance. I hope I managed to get the better quality pairs, being 100% cotton. Is there any advantage to denim with a cotton/polyester/viscose blend ? They were all priced at £10.00, regardless of the fabric. Thankyou.