These are pretty fast rolling tires and pretty light. I like them better than my Gravel Kings because they roll just as fast and don't throw pebbles at my fellow riders. They have a yellow sidewall, not tan if that matters to you. My 38mm version expands to 40 mm wide on my 25 mm internal rims. They require a no ammonia sealant apparently so just to be safe, I bought Challenge brand sealant instead of my normal sealant. Would give 5 stars if I could use my regular sealant. Maybe I can, but I don't want to experiment with these relatively expensive tires.