The job Inflation-linked bonds
Government debt whose payments rise with consumer prices. Protects the purchasing power of money, not its face value.
The argument
Inflation-linked government bonds pay you more when consumer prices rise, so they protect what money buys rather than what it is worth on paper. The question is never whether inflation exists — it is whether protection is cheaper than the inflation that turns up.
The market is currently charging 2.33% a year for that protection over ten years. That is close to the middle of its own range, which means you are neither getting a bargain nor being fleeced. There is no edge in the price.
There is a more important mismatch for someone living in Thailand, and it is the reason this sits at watch rather than hold. Every accessible inflation-linked fund protects against US consumer prices. Your grocery bill is Thai, and Thailand's inflation is driven mostly by imported energy and food — which is what the Baht Import Burden Index at 162.8 tracks, against a world energy index of 198.7. Buying US inflation protection to hedge a Thai fuel bill is an approximation, and often a poor one.
The more direct hedges against the inflation you actually face are the ones already on this page: energy exposure, gold, and unhedged dollars — each of which tends to rise in the same event that raises your cost of living here.