I am currently using Yonex's SHB-91, but I feel like I slide from side to side inside the shoe... So, my question is; which yonex shoe is the narrowest?
Yea, but maybe some of the shoes were feeling narrow, maybe because of the lateral claw or the lacing pattern I'm not talking a lot, it's just a bit
To answer your question technically, you should go for the SHB101 (or 101LTD as known internationally). I don't recall any of the newer Yonex models having the lateral claw which in my experience constrict the shoe at the part where you're feeling loose.