Our sport slim breathable bands compatible with apple watch band 38mm 40mm 41mm 42mm 44mm 45mm, these sport bands are made of durable and premium soft elastomer silicone, water-proof, sweat-resistant, dirt-proof, with unique streamlined T-type and opening design, the narrow width just 0.55 inch. Pin-and-tuck closure and air holes design ensures clean connection and airflow, making the iWatch band adjust wrist size more easier and stable, different stylish apple watch band bring you different life