My wife and I insulated one of my front panniers because we were having trouble keeping food fresh 13 years ago when we were riding across the U.S. We stopped early in Cody, Wyoming and bought a $6 sleeping pad and a roll of duct tape at Walmart. My wife did most of the work
I replaced these panniers about 3 years after these pictures were taken, and the first thing we did was insulate one of my new front panniers. We used the old pannier last weekend to haul our lunches. It is also used frequently to haul ice cream home from the store.
On one day rides we just put a couple of Blue Ice packs in with our food and spare water bottles. It will keep them cool all day. On long tours we buy lunch fixings in the morning, and then stop at a convenience store to fill up our spare water bottles with ice, which goes in the pannier. It keeps things cold and there is cold water for later in the day.
New panniers getting set up. This concept could be used on different types of bags.
