Each set of Fluff Trough feet includes a bag of 4 FDA silicone non-slip feet to fit the Fluff Trough or the Fluff Trough XL.
This item includes 2 extra sets of the Fluff Trough feet.
If you ordered a Fluff Trough or Binge Blocker set, you don't need to order extra feet because they already come with one set of feet.