Over the last few years, a new material for inner tubes has surfaced - TPU or thermoplastic polyurethane. The first brand I noticed was Tubolito, though there are several available now.
Since late last summer, I’ve been trying Tubolito road inner tubes on my TT bikes and on my summer bike. They seem very light, and surprisingly air tight compared to latex tubes. I’ve only used road bike tubes, which come in a couple of weight variants and valve stem length. The two weight variants are the standard Road tube (coming in at a quoted 38-40g per 18-30mm tube) and the S-Road tube (coming in at 23g per 18-28mm tube). The S-Road tubes are for disc brake wheels only.
So are these fancy and expensive TPU tubes better than the alternatives?