Comfort KitTwo fundamental matching solutions to sleep better and enhance wellbeing while travelling: a top quality bed base with springs (h 3cm) and the mattress in foam with a special support (h 4cm) to set at the tent base for greater comfort. It is easy to position in the shell tent, and ensures orthopedic support to the entire body. It is all in one quality and versatility: in fact, it can adjust to every shell tent size. Warning: they cannot be used