Home Waterproof, but is it Breathable? [Cartoon] A waterproof, breathable jacket is great for mountain biking. That is, as long as you use it the right way. By Jeff Barber March 13, 2020 Singletracks may receive compensation for purchases made through any affiliate links in this article. Related articles When a Hip Pack is Really Just a Fanny Pack [Cartoon]Gore Apparel ONE Thermium Jacket ReviewFeeling a Little Sluggish on the Trail This SpringFeeling a Little Sluggish on the Trail This Spring