Specialized’s Airlock Sealant is the in-tube solution for flat prevention, surpassing the competition in flat protection performance. It’s featured here in a personal, 8oz container that’s ideal for two standard wheels.

• Non-toxic, non-separating formula doesn’t have a limited shelf life like the competition.
• Coats the tube for permanent protection.
• Works with any bicycle tube with a removable valve core.
• Works continuously to prevent slow leaks.
• Completely homogenous, so it doesn’t puddle.
• 8oz bottle fills two inner tubes.
• 8oz bottle includes valve puller and hose under cap.