noun
cylindrical sports bag; drum-shaped gym bag
A wasei-eigo term for a cylindrical or drum-shaped bag, often used for sports or gym gear. Compare with ボストンバッグ (Boston bag) and ドラムバッグ (drum bag).
wasei-eigo (Japanese-coined English), from roll Boston
ジムに行くときはロールボストンに着替えを入れて持っていく。
When I go to the gym, I put a change of clothes in my roll Boston bag and take it with me.
あのスポーツショップでかっこいいロールボストンを見つけた。
I found a cool roll Boston bag at that sports shop.