The Apple Watch Sport Band was made from a flexible rubber material called fluoroelastomer with a metal pin closure. Sizes ranged from S/M, M/L, or L/XL. When purchasing an Apple Watch Sport Band, the S/M and M/L sizes are included in the box, allowing the band to fit wrists 140–210 mm.
Apple describes the Apple Watch Sport band:
“Made from a custom high-performance fluoroelastomer, the Sport Band is durable and strong, yet surprisingly soft. The smooth, dense material drapes elegantly across your wrist and feels comfortable next to your skin. An innovative pin-and-tuck closure ensures a clean fit.”
The Apple Watch Sport band has been available in the most colors so far. As of October 2022, 117 Apple Sport Band colors were available with an additional 41 Nike Sport Band colors (according to the Bandbreite app).
This example is Red with a stainless steel pin and is part of Apple’s (PRODUCT)RED line. The box states, “Apple is proud to join (RED) in funding programs to help in the fight against HIV/AIDS.”