The FVT – World Map Spinners are incredibly lightweight, and feel even lighter when you roll them on their ultra-smooth 360 degree spinner wheels. This four wheel spinner system spreads the weight evenly allowing for effortless rolling in different terrains. The cases have a zippered opening system as well as a zipper released expansion system which creates up to 20% more packing space. All 3 pieces also come with built-in TSA locks. When opened, the FVT – World Map Spinners reveal their inner beauty with a fully lined interior and built-in divider with mesh pocket.