The elongated cylinder literally has it all. From the bottom up: Stainless steel chilling rod, aeration vent, sediment filter, pouring spout, and a stopper up top. The whole thing comes apart, so you don’t have to use the chilling rod if your wine’s already cold, and a cleaning brush is also included.
In practice, the Tempour works fairly well, though imperfectly. The “drip free” pouring spout isn’t exactly dripless, and the aeration system — which is submerged in the wine — is no more effective than simple sloshing wine out of the bottle. The filter system seems to work well, though it keeps wine pouring on the slow side. However, the big draw is the chilling system, and unfortunately it’s just not that effective. While it can gently chill a room-temperature wine (cooling down a too-warm red), but it didn’t really do much to keep a chilled white wine cold at the table. There ratio of wine to chilling-device surface area is just too high to be effective, and as you drink the wine, this ratio only gets worse.
Overall: Neat idea, great design, but hit-and-miss effectiveness.