Big Happie Hair(TM) Big Happie Hair Bumpits, Black (Set Of 5). Get salon-styled hair and boost volume with Bump It hair volumizing inserts. These comfortable, leave-in, self-gripping, hidden inserts create the perfect volume every time. Bumpits cost less than a trip to your local salon and are easy to use. Bumpits stay firmly, no slippage. Create dozens of great looks. Set includes 2 - Small Bumpits, 2 - Large Bumpits, 1 - Hollywood Bumpit,.