Review on YHC Silicone Replacement Bands for Fitbit Charge 4/3 SE: Breathable Sport Watch Wristbands for Men – White/Black (Large) by Lacey Mendoza

The strap is made of soft silicone and is very comfortable to the touch. It is also very flexible, soft and comfortable. I ordered a size up because the original Charge 4 small size strap is too narrow for me, but this one fits me (although it's longer than I expected). It detaches and snaps into place with no problems. My only complaint is that those two little rings that are supposed to hold the longer end of the band don't have a 'hook', they don't snap securely into the hole so they keep shifting and moving.