Air in, fingers warm. Punk is a compact Presta CO2 inflator with a silicone sleeve around the cartridge, so you hold the sleeve rather than the metal that freezes as it empties.

Highlights

• Presta valves only
• Silicone sleeve sized for 16 g or 25 g threaded cartridges
• Turn the cartridge to meter the airflow
• Plastic ring keeps the cartridge sealed in your pack
• Sleeve slot takes a Granite Rockband strap
• 24 g with the small sleeve, 25 g with the large

Inflate with control

Fit the plastic ring on the cartridge thread, screw on the inflator and slide the sleeve over the cartridge. When you need air, remove the ring and screw the cartridge in to pierce it, push Punk onto the open Presta valve, then unscrew the cartridge to start the flow and screw it back in to slow or stop it. Wear gloves: the cartridge gets very cold.

Compatibility & fit

Works with Presta valves only, not Schrader. Takes threaded CO2 cartridges: choose the 16 g option for the small sleeve or the 25 g option for the large. CO2 cartridges are not included. Thread a Rockband through the sleeve slot and Punk rides on your frame next to your spare tube.

Options