TPU Bike Inner Tubes 700 x 32-47C

TPU construction is the key difference here: these inner tubes are listed at 50 g and take up less room in a bag than standard butyl tubes, making them easier to carry as ride-day spares. The stated fit covers gravel and 29-inch mountain bike tires in a broad range of widths.

They’re a practical choice when a compact replacement matters more than sticking with a conventional butyl tube.

Key specifications

The two-pack is designed for 700 x 32-47C tires and is also described for 29-inch MTB use. The tubes use TPU, and the listing gives a weight of 50 g and says they use 50% less bag space than a typical tube. Those are useful details for riders who carry a spare on longer rides, though the listing doesn’t clarify whether the weight refers to each tube or the pair.

The valve is a metal Presta type with a removable core, which can be replaced if damaged. There is a detail worth noting before you order: the product name lists 45/60 mm valve options, while the fit description specifies a 45 mm French valve. Check which length applies to the version you’re selecting, especially if your rim requires a particular valve length.

For installation, the instructions say to inflate the tube lightly, up to 0.5 bar/8 psi, before fitting so it’s less likely to twist. Keeping the rim and inside of the tire clean is also recommended to reduce the risk of punctures from debris.

Who it’s for

It suits you if you ride gravel or a 29-inch MTB with tires in the stated width range and want a spare that takes up less space in a saddle bag or pack. For example, it can be a compact backup for a ride where you’d rather carry a replacement tube than rely on getting help after a flat. The removable valve core is another useful detail if a damaged core is the issue.

Compared with choosing a conventional butyl tube, this product puts the emphasis on lower listed weight and packability. That focus may appeal to riders who count every item they carry, but the fit range still needs to match your tire. You may want to skip it if your tire falls outside 700 x 32-47C or if you need a valve length that the selected version doesn’t provide.

Included in the package

The product is sold as a two-pack of inner tubes. The available details don’t say that tire levers, patches, or a pump are included, so plan on having installation tools and any other repair supplies you need separately.

Practical doubts

Will it fit every gravel or 29-inch MTB tire? No. The stated range is 700 x 32-47C, match your tire size to that range rather than relying on the general gravel or MTB description.

Can the valve core be replaced? Yes. The listing describes a removable core that can be replaced if it is damaged.

How should I inflate it before installation? The instructions call for a light initial inflation, no more than 0.5 bar/8 psi, and recommend keeping the rim and tire interior clean during fitting.

When it makes sense

Choose this two-pack if the tire size matches and you want compact spares for gravel rides or 29-inch MTB outings. The main tradeoff is that the valve-length information isn’t consistent across the product details, so this is less straightforward if your rim depends on a specific length. If that measurement works for your setup, the TPU format offers a space-saving alternative to carrying bulkier conventional tubes, if not, a tube with clearly specified valve dimensions is the safer fit.