The Nike Sport Loop band was woven from nylon thread to create a hook-and-loop closure. These bands were available for the 41 mm and 45 mm Apple Watch models, and were offered in sizes to fit 130–200 mm wrists and 145–220 mm wrists. The bands also fit older Apple Watch sizes.
This band uses a color gradient between royal blue (“Game Royal”)and navy blue (“Midnight Navy”). The edges are part of the gradient. The plastic connectors and closure are royal blue. The side of the band features the words “JUST DO IT.” in a lighter shade of blue in Nike’s corporate font (a custom version of Futura Condensed Extra Black).
Apple described this Nike Sport Loop band:
“Breathable and lightweight, the Nike Sport Loop is designed for fitness. The iconic Nike ‘Just Do It’ logo is woven right into the soft nylon using an innovative technique. A hook-and-loop fastener makes for quick and easy adjustment, and dense loops on the skin side provide soft cushioning while allowing moisture to escape. On the reverse side, the attachment loops are securely anchored for superior durability.”
Source: Apple, Bandbreite