COMFORTABLE: RunTec no show socks have a medium cushioned toe and heel with a lightweight body for a hidden balance soft feel. A reinforced nylon and polyester landing pad makes for elite long-lasting comfort and durability for long distance runners. DURABLE & BREATHABLE: RunTec socks prevent irritation and bunching in a non slip sock over the foot and vented top panel lets feet breathe from sweat or moisture while moving. Stego??s RunTec no show sock will give you the best performance at the gym. ENGINEERED FIT: The sock has a deep heel pocket and max arch support keeping the sock from shifting to give a snug fit. Performance fibers work to wick away moisture and heat for a balanced sock. Made in the USA. MULTI-PURPOSE: These socks work for any champion. Ideal for an athletic sport or activity like running, training, walking, cycling, biking, workout, volleyball, soccer, golf, tennis, cheer, or wearing around the house. LIFETIME GUARANTEE: The need for a perfect fit and long-lasting pair of performance socks is important with any shoes from sneakers to hiking boots. If there??s an issue with the construction or durability of the sock, return them for a replacement.