- All of Schwalbes inner tubes are 100% recyclable and are inflated for 24 hours and tested for leaks at the factory before being shipped. Schwalbe inner tubes all have a very high butyl content and a high material purity. AV17 700c Inner Tubes * Weight: 150g * Schrader Valve * 700c x 28-47c / 28" x 1 1/2" * 40mm Valve