Features: MODELCOLRO OPTIONAL: 1PC/3PCs/4PCs are optional for you(350ml/12oz, 600ml/20oz, 800ml/27oz, 1200ml/40.6oz). Two bright colors are also offered for you to choose from. Satisfy your different needs for meals, snacks, fruits, etc. RELIABLE QUALITY: Selected silicone features superb flexibility and no odors. No worry about deformation. Sealed silica-gel vent-valve ensures noair leakage. VIEW: The transparent box-cover makes a clear view of inner items. FOLDABLE: The siliconebox body is soft and foldable. Only 3cm/1.2in high after folding makes it convenient to carry.