MSR Ultra Heavy-Duty Tube - 110/100-18/Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Extra thick tubes for those critical situations where you absolutely cant have a flat.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41no%2Bmjkg7L.jpg" noproxy>