will the gel burst in my suitcase?

As long as you do not overpack your suitcase and squash your bras or swimwear then no there is no reason why your gel bra or bikini should burst whilst you travel. Like any item that contains liquid though we would always recommend popping inside a bag when you pack it, just for peace of mind, and of course if you do have any problems with liquid leaking please make sure you contact us immediately.