Nailed it!!!
Seriously tho if the word "box" is causing the double entendre issues then maybe use "Case" or somesuch instead (as a descriptor) and only refer to it as the Expedition Box as a name IE...
Tired of constantly undoing ropes or ratchet straps to get into a storage case you've firmly secured for that forgotten item?
The dust and waterproof Expedition Box solves that problem with dedicated tie-down points on each corner so you simply flip the lockable latches and open the lid.
Frustrated by the struggle to clean out every nook and cranny after that epic trip?
The Expedition Box has a super smooth inside for effortless cleaning and the lid is easily removed to stack empty boxes for efficient storage.
Not perfect but any more and I'll have to charge consultancy fees