A lumpy rock, cold hard stadium bench, old bus seats without cushioning, none of these sound like a comfortable place to park your bum. Unless you have the Sea to Summit S.I. Seat!This little guy is basically a miniature self-inflating mattress, only much smaller. It rolls up nice and small, and when you need to turn an uncomfortable surface into a padded and insulated place to sit, all you need to do is pull this handy seat out of its carry case, let it self-inflate and place it under your…
