hagajk Whoop 4.0 Soft Replacement Strap Breathable Sports Wristband Tracker Strap: Breathable and sweat-proof
For active individuals who rely on their Whoop 4.0 tracker during workouts, this replacement strap offers a comfortable, secure fit for all-day wear. Instead of just a functional accessory, it's designed to enhance your focus on performance by staying put during intense activities like running or swimming, so you can track your metrics without distractions.
Made from 100% nylon, it's lightweight and flexible, molding to your wrist for a custom feel. The hook and loop design allows easy adjustment, while the buckle clasp ensures it won't slip off mid-sprint. A key detail: the strap dries quickly after a sweaty session, preventing that clammy feeling and keeping your skin fresh. It's odor-resistant and sweat-proof, making it ideal for daily use without frequent changes. Simply install it with no tools needed—perfect for switching between activities or cleaning.
Features
- Quick-drying and odor-resistant
- Easy installation without tools
- One-click removal for convenience
- Lightweight and flexible design
- Adjustable for secure fit
- Breathable and sweat-proof
General specs
- Brand: hagajk
- Model: Whoop 4.0
- Seller: Joom
- ID: 68cc4065b96c59010f1d8d11
- Size: Adjustable
- First listed by seller: 11/15/25
If you are interested in more details, you can find full information on the seller's page.
Price History for seller Joom
| Date | Price |
|---|---|
| 12/10/25 | $19.21 |
| 11/15/25 | $18.78 |
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
hagajk Whoop 4.0 White Breathable and sweat-proof
|
Qjijolz R5 Silver No subscription fee required
|
GenXenon H01 Silver Heart rate and blood oxygen monitoring
|
Fitness Tracker Smart Band Black
|
Fitbit FB424BKBK Black
|
PJIVE DS10 Pink
|
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| Brand | hagajk | Qjijolz | GenXenon | USMECBL | Fitbit | PJIVE |
| Model | Whoop 4.0 | R5 | H01 | FB424BKBK | DS10 | |
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| Price | $19.21 | $39.99 | $19.99 | $28.99 | $99.95 | $179.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 8, 2025 | December 6, 2025 | November 9, 2025 | January 16, 2026 | January 21, 2026 | January 14, 2026 |
| Size | Adjustable | US 7 | Adjustable | Small | Small | |
| Material | Stainless Steel | Silicone | Nylon, Silicone | |||
| Battery Life | 5–7 d, 7–10 d | 10, 14 | 10 | 40, 60 | ||
| OS Compatibility | iOS, Android | Android, iOS | Android, iOS | |||
| Water Resistance | IP68 | IP68 | 5ATM | IP68 | ||
| Weight | <num1>, <num2> | 130 | 18.4 | |||
| Connectivity | Bluetooth | Bluetooth | Bluetooth | |||
| Display Size | 1.47 | |||||
| Display Type | AMOLED | |||||
| Health Sensors | Blood Oxygen, Heart Rate | Heart Rate | Blood Oxygen, Blood Pressure, Heart Rate | |||
| Storage Capacity | <num1>, <num2> | |||||
| Bluetooth Version | 5.0 | 5.0 | ||||
