I've been using the Emilydeals replacement band for my Whoop 4.0 for about a month now, and I have to say - it's been a game changer! The soft nylon knit material feels just as comfortable as the original Whoop band, with that perfect amount of stretch that makes it ideal for all-day wear.

What really surprised me was how well the U-shaped metal frame holds the tracker securely in place. Whether I'm doing HIIT workouts or sleeping, my Whoop stays put without any slipping. The anti-slip knit strips inside really do their job!

I opted for the navy blue color (which looks more like a deep midnight blue in person) and it's held up beautifully against sweat and daily wear. While it doesn't have the WHOOP branding on the clasp, honestly? I don't miss it one bit - especially when I'm saving nearly half the price of official bands.

The only minor note is that some colors might look slightly different than advertised (my friend got the Starlight which leans more gray than beige), but the quality makes up for it. Charging works perfectly fine with my pod, though I did see one reviewer mention connection issues.

As someone who wears their Whoop 24/7 - through showers, swims, and sweaty workouts - having these affordable replacement bands means I can finally rotate colors without breaking the bank. Definitely planning to order more colors soon!