surundoNylon Sport Band Compatible with Whoop Band 4.0 Strap Men Women with Bumper Case, Breathable Nylon Adjustable Waterproof Replacement Wristbands Straps for Whoop 4.0

I am wearing one of the bands for over 3 months now and no issues. I have skin issues and I have not had any adverse reactions as long as I take it off occasionally for showers and charging. I have not had to use the other bands as the first one has lasted well enough. the coloration on the metal did rub off so it's not perfect but I don't mind that minor issue, I think for the price this is more than I could have asked for.

I love how reasonable their prices are compared to those on WHOOP’s official site. I highly recommend buying from this merchant instead of directly from WHOOP.

So easy to use, love the variety of colors and fits Charge 6 perfectly

Gave 4 stars just because the metal is a little cheap feeling but overall it’s been great and has not broken. Fit perfectly!

Over the years I’ve been using Fitbit, I’ve found their OEM bands suck so I always buy bands off Amazon to have on hand. They usually last longer than the originals. When my charge 6 arrived. I had the backup bands ready to go. I didn’t like the original bands at all, so I didn’t even bother putting it on. Switched out the band with one of these and it’s great. It’s actually my favorite after market band for Fitbit I’ve ever used, very comfortable.

The original Fitbit band gave me a rash after constant daily use. These bands are much better, and are a good value for the price. They are also more secure than the original band.

The bands were exactly what I expected. Easy to put on and the colors are good. Love the double clasp.They also are very flexible and comfortable.

This product felt like a scam. Clasp was very cheap and flimsy. The end piece that you slide on would not stay securely on the Whoop 4.0 without sliding off easily. Worst of all, this strap wouldn’t properly clasp onto the Whoop 4.0. I would not recommend this product and strongly advise to look elsewhere.