Hey mountain bikers and road cyclists - protect your expensive crank arms with these simple but effective silicone boots! These flexible protectors slip right over your crank ends to prevent damage from rocks, logs, or any other trail obstacles that might smack against your bike. Made from durable silicone material that's impact-resistant and colorfast, so they won't fade or tear easily. The thickened design adds extra abrasion resistance while the precise 29mm inner width ensures a snug fit that doesn't slip off during rough rides. Weighing only about 16g for the pair, you'll barely notice they're there until they save your cranks from costly damage. Available in multiple colors if you want to add some flair to your bike's look. Installation is stupid simple - just stretch them over the ends of your crank arms and you're good to go. Particularly great for carbon cranks that can be expensive to replace or repair. The material is flexible enough to absorb impacts but tough enough to handle repeated abuse. Comes as a set of two so both sides of your bike are protected. Whether you're hitting technical trails or just want to prevent parking lot scratches, these offer cheap insurance for your components. The silicone construction means they're easy to clean and maintain too. Much better than wrapping tape around your cranks or going unprotected. For such a small investment, they can potentially save you hundreds in replacement costs down the line. The low profile design doesn't interfere with pedaling or foot clearance either. Seriously, if you ride anywhere with potential crank contact, these should be on your bike yesterday.