Functional low cost and easy
We have all experienced that it’s not easy to avoid thermal gradients on a 37°C warm bioreactor placed in a room with 18 °C. And its not uncommon that the ceiling mounted air-con outlet is arranged above the table for the SUBs.
Keep the cost down and dress the SUB or P-SUB with some simple clothing. We all have some simple bubble foil available. Two such layer and a stabler is far sufficient.