Shoes

https://www.youtube.com/watch?v=vG28lYR1DFY https://www.youtube.com/watch?v=dto-ccsurc8 https://www.youtube.com/watch?v=uLCWVoW0NSc https://www.youtube.com/watch?v=hre3UdoxbE0 3d printed from https://hackaday.com/2018/10/05/3d-printed-sneakers-are-now-a-thing/

jordan
https://www.youtube.com/watch?v=2E29m35ZAAM

size reduction
https://www.youtube.com/watch?v=mM13ytZZZDA larger socks, flat inserts multiple(leather top thin), tongue footpads midsize fit, heel strip or heel grips, shrink the shoe(cheap shoes)

links
Mountain bike