Shear thickening fluid capsules harden upon impact for protection.

Designed with relaxation in mind, the men's Koolaburra by UGG Graisen Slipper will also take you to the streets in style.
Pair the Graisen with your favorite pair of jeans or shorts and you're off to a great start with this men's suede slipper with a durable indoor/outdoor sole that is perfect any time of the day. The practical no-fuss slip-on style with a plush cozy interior warms the feet and delivers long-lasting comfort. Treat yourself to a comfortable house shoe with an outdoor-friendly traction outsole and casual vibes.

articulated flex points follow natural foot hinge positions