Eclipse Performance Brompton Tube — 16" × 30/45 mm 80mm valve Size (ETRTO) 622 × 18–25

Size (ETRTO) 622 × 18–25 mm Material TPU (thermoplastic polyurethane) Valve Presta

Race-day setups for kids' XC and gravity disciplines

screw the core back in

that number has context every single time

Packs small for a tube this size

Eclipse Performance Brompton Tube — 16" × 30/45 mm 80mm valve Size (ETRTO) 622 × 18–25A Brompton is engineered to be carried as much as ridden. The tube inside it should be too. At 32 g, the Eclipse Performance Brompton tube is one of the lightest inner tubes made for any wheel size designed specifically for the 16 1" (ETRTO 349) tyre standard that Brompton uses across its entire range, and includes the valve hole adapter that the Brompton's narrow fork crown requires. Why it works 32 g. 70% less than a standard butyl Brompton tube .