Really like the leather band for my Vivoactive 3! : r/Garmin
Amazon.com: Magnetic Leather Band For Garmin Vivoactive 4 Band, Sweatproof Hybrid Leather Silicone Rubber Replacement Strap with Magnetic Clasp Compatible with Garmin Vivoactive 4 (A) : Electronics
Leather Watchband for Garmin Vivoactive 4 3 Music Strap Band for Garmin Venu/GarminActive/Vivomove HR Watch Correa Quick Release - AliExpress
Best quick release bands for Garmin Vivoactive 4 | iMore