The silicone bands are very long lasting and impervious to sunlight and most liquids.  However, the silicone bands are less stretchy than opaque and jelly bands. This special collection deal includes the following items: NEW Rainbow Loom® Complete Package with Metal Hook Rainbow Loom® XL Storage Case/box, Made in USA, Outer Dimensions: 15.25"x14.125"x2.125" Heroic Mixed (Medieval 300) Band Shining Armor Mixed (Medieval 300) Band Satin Mixed (Persian 300) Band Spice Mixed (Persian 300) Band Cleopatra Mixed (Egyptian 300) Band Butterfly Mixed (Pearl 300) Band Fantasia Mixed (Pearl 300) Band Blue/Pink (Galaxy 300) Band Pink/Yellow (Galaxy 300) Band Green/Blue (Galaxy 300) Band Green/Pink (Galaxy 300) Band Yellow/Pink (Galaxy 300) Band Pink/Blue (Galaxy 300) Band Due to its heavy weight and large size, postage for this item is higher if shipped outside Continental USA.  Postage will be automatically calculated by the shopping cart.  All authentic Rainbow Loom® products, including this product, have been certified to not contain harmful phthalates or other harmful substances, and meet U.S. government toy safety standards. Beware of “look-alike” counterfeit products that may contain harmful substances. Please purchase from this website or our authorized retailers to ensure that you are purchasing the authentic Rainbow Loom® products.WARNING: Not for children under 3 years due to potential choking hazards. Patents: US 8,684,420, US 8,485,565, US D696,576