Sailors have used boat duffel bags for their personal belongings since time immemorial. Their form hasn't changed much historically – probably because it was perfect from the start. Only the materials that were improved over time changed. Nowadays, natural materials are combined with synthetic ones. It is advisable that the boat bag is at least to some extent waterproof on the outside and, conversely, that it is able to pass moisture from the inside.

In terms of size, it's a good idea to get a boat bag a little bigger than you need – at worst you'll squeeze excess air out of it if you don't use it all up. Alternatively, you can put other items of equipment inside that you normally carry in other luggage.

A carrying handle will definitely come in handy, so that you don't have to hug the boat bag with both hands like a bag of cement, but you can even throw it over your shoulder. The padded shoulder straps can facilitate the transport of the boat bag as a backpack. External pockets are also practical, for example for documents, which simplify the search for important equipment elements and ensure their operational availability.