I haven't had a ton of riding time with these underliners. But from what I've decided already these bad boys are blister buddies. I raced the first half of this season in the MAXC series and started getting hellacious blisters when it gets fast and dry out, but with the underliners now boom, bam they're out of the picture and can focus on haulin the mail. Only complaint is that they add some getting used to, because it makes the grips feel twice as thick. But I'd definitely recommend. Safe ridin out there comrades.