Ships in 1-2 business days | Based in Ferndale, WA | Est. 1977 Support your feet so you can adventure farther Superfeet Hike Support insoles stabilize your feet on uneven ground, reducing stress on your feet, ankles, knees, and back. Upgrade the comfort of your boots and shoes with dual-layer cushioning foam and structured support made with strong yet lightweight carbon fiber. Help keep your feet secure, even on the steepest climbs and toughest descents. Features: Aerospring(TM) rebound dual comfort foam provides two layers of heel-to-toe cushioning that help reduce fatigue and provide reliable stability for the rigors of a good hike EVOLYTEA(R) carbon fiber stabilizer cap that provides weight-defying support and stability for the trail A deep heel cup helps to prevent heel slip and the toes from hitting the front of the boot or shoe Moisturewick(TM) top cover helps to reduce odors Durable construction made to provide reliable support for 12 months or 500 miles, whichever comes first Fit: Made to replace the removable liner in roomy hiking boots and outdoor footwear. Trim to fit your shoe size. If you are between sizes we recommend sizing a half size up. _______________________________________________ Specs: Arch: Medium/High Thickness: Max Cushioning: Mid Weight: 3.7oz | 104g (size D) Materials: Nylon with glass fiber and carbon fiber cap Gel pad Polyurethane memory and EVA foam Woven polyester top cover Made in South Korea