Soft, Breathable, And Lightweight, The Sport Loop Features A Hook-And-Loop Fastener For Quick And Easy Adjustment.The Double-Layer Nylon Weave Has Dense Loops On The Skin Side That Provide Soft Cushioning While Allowing Moisture To Escape. This Weave Is Made With 82% Recycled Yarns, Some Of Which Contain Material From Discarded Fishing Nets.This Band Is Carbon Neutral. The Sport Loop Contains 45% Recycled Content By Weight, 100% Of Manufacturing Electricity Is Covered By Clean Energy, And 50% Or More Of All Carbon Neutral Apple Watch Products Are Shipped Without Airplanes. Regular - Fits 130–200Mm Wrists