Thin rice noodles are ビーフン and are in every supermarket. Flat noodles for pho and pad thai are sold as フォー or センレック.
ビーフン
bīfun · thin rice vermicelli
フォー
fō · flat, for pho
センレック
senrekku · medium, for pad thai
In the shop
Dried noodle shelf for ビーフン; the ethnic food shelf for フォー and センレック.
Which shops
ビーフン everywhere. フォー and センレック at KALDI, Gyomu Super, larger supermarkets and Asian grocery shops.
Watch out
春雨 looks similar but is made from starch, not rice. It turns slippery and clear.
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