Tummy Filler is one of the four skins released in the Survival Kit offer. It could be purchased as part of an item deal for a limited time in mid March 2020.
Tummy Filler could be purchased for $3.99 in a limited time deal which included a 3x Mass Boost (1 Hour), a 3x XP Boost (1 Hour), 5000 coins and 250 DNA. It was not available for individual purchase and may not be available for purchase in the future.
Details of this skin may vary depending on location, platform or time.