I got some deertan laces from Leather Cord USA for my huaraches about a month ago, and I love them! I needed a 2-yard package for each shoe (which was more than enough), and it cost I think a bit under $10 with shipping.
Pros: So thin and soft and comfy. NO irritation between my toes AT ALL! Just really super-duper comfy. (The cheapo craft cord I'd first gotten was so uncomfortable. With this stuff, my huaraches have become my casual comfort shoe of choice.) So far they are holding up well under my shoes with my no-knot tying method. I am still using (and liking) my cheapo leather soles, and they are so flexible that there isn't much ground contact where the laces go under the shoe since that's between my toes, so there's not much friction on the actual laces. I've only run about 4 miles in them total but have worn them a lot just for everyday use. So I think they're strong enough despite their super-duper thinness.
Con: Just like any leather lace, they are somewhat "stretchy", and especially at first you'll have to keep adjusting the laces to get the tightness right.
Here's a screenshot of the colors available:
Pros: So thin and soft and comfy. NO irritation between my toes AT ALL! Just really super-duper comfy. (The cheapo craft cord I'd first gotten was so uncomfortable. With this stuff, my huaraches have become my casual comfort shoe of choice.) So far they are holding up well under my shoes with my no-knot tying method. I am still using (and liking) my cheapo leather soles, and they are so flexible that there isn't much ground contact where the laces go under the shoe since that's between my toes, so there's not much friction on the actual laces. I've only run about 4 miles in them total but have worn them a lot just for everyday use. So I think they're strong enough despite their super-duper thinness.
Con: Just like any leather lace, they are somewhat "stretchy", and especially at first you'll have to keep adjusting the laces to get the tightness right.
Here's a screenshot of the colors available: