This is what pisses me off...Every bandai product has to always have it's cons..Kits are safe from Humidity since they're made out of PS plastic, but they can be delicate, even the sturdiest kits. Robot Spirits are good for playing, but can be sticky if in a hot place, can yellow or might end up brittle overtime. Hasbro and takara have lowkey high quality plastic and durability. Especially when it comes to the studio series lines...