This duffle bag closes with, among other things, a buckle and zipper. The material of choice for this bag is polyester and it has a volume of 100 litres.
From Wardow
Klättermusen Ydalir 100L Travel bag black
WildBounds
Ydalir Duffelbag 100L
Trekkinn
KlÄttermusen Ydalir 100l Duffle Blue