Once a year seems high frequency for that price! Are you wearing them out? I either wear rainbows, nothing, or if i'm getting high volume steps earth runners. The earth runners so far feel like they'll last a life time.
I walk A LOT. Now it's only a couple miles a day but a few years ago I was walking six miles daily. I'm also a chonky boy and I get the 6mm soles usually.
edit: they also let me move the toe plug backward because I have freakishly long toes
Once a year seems high frequency for that price! Are you wearing them out? I either wear rainbows, nothing, or if i'm getting high volume steps earth runners. The earth runners so far feel like they'll last a life time.