The Apple 40mm Solo Loop Band for Apple Watch 42mm, 41mm, and 40mm Cases. Northern Blue version. Size 4. Model: (MYQQ2ZM/A).

40mm, 41mm, and 42mm bands are all compatible with 40mm, 41mm, 42mm case sizes.

Features:

• Made from liquid silicone rubber, the Solo Loop features a unique, stretchable design with no clasps, buckles, or overlapping parts, so it’s ultra comfortable to wear and easy to slip on and off your wrist.
• Each band is specially treated with UV to give the band a silky, smooth finish.
• It’s also swimproof and sweatproof, so it can go just about anywhere you want to wear it.