smart pressure sensing.

Smart pressure sensing bike tubes like the Tubolito Tubo-PSENS utilize passive Near Field Communication (NFC) chip technology integrated into the TPU wall. The sensor remains completely dormant with zero power draw until an NFC-enabled device (such as an iPhone or Android smartphone) is brought within close proximity (approx. 1 to 3 cm). The smartphone emits a localized 13.56 MHz radio frequency field that inductively powers the micro-chip for a fraction of a second, enabling it to read the pneumatic pressure sensor and transmit the exact digital value (in Bar and PSI) straight to the Tubolito app. This battery-free design guarantees unlimited operational lifespan, zero charging requirement, and extreme light weight (only 92 grams total).

External valve cap sensors present serious operational drawbacks for commercial applications and high-performance cycling:

• Dynamic Unbalance & Weight: External caps add 15-30 grams at the extreme periphery of the wheel rim ($r$), creating severe dynamic wheel vibration at speeds above 25 km/h. Smart TPU tubes place a sub-gram chip flat against the tube wall, maintaining perfect balance.
• Theft & Damage Risk: External caps are easily stolen, knocked off by trail debris, or damaged during parking. Tubolito smart sensors are completely enclosed within the reinforced tire cavity, making them 100% vandal-proof and protected from moisture, mud, and mechanical impacts.
• Maintenance Friction: External sensors require frequent battery changes (CR1632/CR2032) across entire fleets. Smart TPU tubes are maintenance-free throughout their operational life.

Tubolito TPU formulations are engineered to withstand continuous operating temperatures up to 80°C (176°F). Because modern performance road, gravel, mountain, and e-bikes utilize disc brake systems, thermal energy is dissipated at the central rotor rather than the rim bed. For rim brake applications, Tubolito produces specialized approved compounds. The embedded NFC pressure sensor chip is rated for extreme industrial temperatures (-40°C to +85°C), guaranteeing accurate calibration even during intense high-speed downhill descents.

Yes. Tubolito provides complete OEM/ODM partnership frameworks for tier-1 bicycle manufacturers, mobility fleets, and large international brand distributors. Customization options include:

• Custom Presta valve stem lengths (42mm, 60mm, 80mm) with black or custom anodized finishes.
• Custom TPU wall thickness formulations tailored specifically for ultralight racing or puncture-proof e-cargo applications.
• Private-label retail packaging and co-branded inner tube printing.
• Software SDKs and APIs for integrating Tubo-PSENS pressure telemetry directly into proprietary vehicle companion apps.

Unlike vulcanized butyl rubber tubes which rely on chemical vulcanizing glue, TPU inner tubes are repaired using specialized elastomeric adhesive patches. The Tubolito Flix-Kit contains custom self-adhesive TPU patches that permanently bond with the inner tube surface within minutes. The repair process does not affect the integrated NFC chip or alter pressure sensing functionality in any way.

Logistical density is a critical profit driver for global distributors and OEMs. Standard butyl inner tubes are heavy and bulky. Tubolito smart TPU inner tubes roll up into a compact cylinder 75% smaller than traditional butyl tubes. A standard sea freight container or air cargo pallet can carry up to 4x more Tubolito units per cubic meter. This dramatically lowers landed shipping costs per unit, reduces warehouse footprint requirements, and minimizes corporate carbon footprints in alignment with international ESG standards.