YazyCraft Mini Collection and Convenient Storage Kit/Box/Container With Over 4000 Bands And 100 C clips Material: Bands and 100% silicone and are made for extra durability Literally dozens of colors available - all the colors of the rainbow! Includes 4000 rubber bands 100% compatible with all Loom sets and 100 easier to use 'S' clips Fun and educational - the perfect gift! All bands are designed for extra strength