Schwalbe No. 4 Inner Tube

16/18 inch inner tube with different types of valves.
Extreme air pressure is stable! The rubber compound makes it possible: less air leakage and less to pump. Extremely reliable! Quality control for safe riding pleasure: each Schwalbe tube is checked twice for air retention in the factory.

Fits the following dimensions:
37-340 (16 x 1 3/8)
28-349 (16 x 1 1/8)
37-349 (16 x 1 3/8)
28-355 (18 x 1 1/8)
35-355 (18 x 1,35)

• Product Name: Schwalbe No. 4 Inner Tube - 16/18"
  
• Manufacturer: Schwalbe
  
• Activity: Cycling
  
• Wheel size: 16" (349mm), 18" (355mm)
  
• Tire width: 1.125", 1.25", 1.35", 1.375 (1 3/8"), 1.20", 1.30"
  
• Inner tube material: Butyl Rubber
  
• Model year: 2026
  
• Weight: 85g
  
• Valve Type: Schrader (Auto)