Yes sir custom! That what makes me different than the big, medium and small manufacturers out there and big retail outfits! In addition, lord knows where their inventory is stored. Heat affects plastic in such a way most fish will not touch it and a period of heat exposure. The only time my baits are not in a cool environment is during shipping. All plastics should be stored in your house until you go fishing then return them to the house in your bag not left in the heat in the boat in my opinion.