Shark Skinzz - Reusable Folding Drink Ware & Accessories - Sandwich Bags - Dora the Explorer Washable, packable, reusable, sandwich bags! Perfect for lunches, picnics, schools, field trips, ect... Containe NO lead, NO PVC, NO phthalates and NO BPA. Sharkskinzz's 'Stay Fresh' thermal lining keeps foods fresher longer.