The Sport Sock is an updated athletic version of the 2UNDR 70 performance sock. Constructed at a 70-degree angle, it promotes the optimal flex angle for comfort and performance in most activities other than sleeping. The Grip Dots have been removed from these casual performance socks. Now with a cotton blend for breathability and softness 50% polyester | 30% cotton | 15% acrylic | 5% elastane Seamless toe closure Compressive arch support Targeted ventilation Large pit at the heel Cotton blend *Delivery times for 2UNDR products may vary between 5 and 10 business days.