Your knees will thank you. Seriously. The DeFeet Wool Kneeker adds the wet-weather warmth of pure merino to their already-crucial cycling knee sleeve. Serious cyclists know: warm knees mean longer rides and fewer injuries, and the one-size-fits-all Wool Kneeker keeps your knobblies toasty without the hassle of full-on tights. DeFeet recommends wearing a pair of Kneekers on any cold or wet rideâ€¦but honestly, we were doing that alreadyâ€”and you should too. Sold as a pair.