Michelin brings these superb Aircomp Ultralight Presta Tubes from France. They're a fantastic choice for lightweight builds if you'd prefer butyl over latex inner tubes. Where latex is permeable enough to require you to reach for your floor pump nearly every ride, butyl rubber is far more airtight. And that these Michelin Aircomp Ultralight Tubes tickle the scales at less than 80 grams while still offering the durability you want out on the open road is a big plus. They're available in your choice of valve length -- 40mm, 52mm or 60mm.