WHOOP 5.0 CoreKnit Bicep Band – Jet Black
Product overview.
The WHOOP 5.0 CoreKnit Bicep Band in Jet Black is a performance-focused accessory engineered specifically for members who prefer wearing their WHOOP sensor on the upper arm rather than the wrist. Ideal for weightlifting, combat sports, racket sports, and workouts where wristwear may cause interference or discomfort, it delivers an off-wrist fit without sacrificing data collection accuracy for strain, recovery, and sleep tracking. Constructed from a premium performance knit blend featuring 90% recycled polyester and 10% elastane, the band is soft, flexible, and breathable for extended training sessions. The CoreKnit fabric dries approximately 40% faster than SuperKnit materials and includes an anti-microbial finish to prevent odor buildup during intense physical activity. Combined with stainless steel hardware and the Fast Link™ slider mechanism, the Jet Black CoreKnit Bicep Band provides an adjustable, non-slip fit and easy attachment.
Specifications.
- Brand
- Whoop
- Category
- Fitness Devices
- Brand
- WHOOP
- Model
- Life (MG)
- Warranty
- Standard 12-Month Manufacturer Limited Warranty
- Placement
- Upper Arm / Bicep
- Model Name
- Core Knit Bicep Band – Jet Black
- Drying Speed
- Fast-drying construction; dries ~40% faster than Super Knit fabric
- Product Line
- Core Knit Bicep Band Series
- Color Variant
- Jet Black
- Band Materials
- 90% Recycled Polyester, 10% Elastane Performance Knit
- Sizing Options
- S/M (Small / Medium): Fits bicep circumferences between 25 cm to 33 cm (10 in to 13 in) L/XL (Large / Extra Large): Fits bicep circumferences between 33 cm to 41 cm (13 in to 16 in)
- Fabric Treatment
- Integrated Anti-Microbial Finish
- Care Instructions
- Hand wash with cold water and gentle soap; air-dry only
- Hardware Materials
- Premium Stainless Steel Hook, Clasp, and Fast Link™ Slider Assembly
- SKU / Part Numbers
- 810114362839 (S/M), 955-13-000-036-030-SD26-K
- Attachment Mechanism
- Fast Link™ Slider Quick-Release System
- Device Compatibility
- WHOOP 5.0 and WHOOP MG Sensors Only (Not backward-compatible with WHOOP 4.0)
- S/M (Small / Medium)
- Fits bicep circumferences between 25 cm to 33 cm (10 in to 13 in)
- Feature Compatibility
- 24/7 Biometric Tracking, Strength Trainer Compatible (Note: ECG readings on WHOOP MG require wrist placement)
- L/XL (Large / Extra Large)
- Fits bicep circumferences between 33 cm to 41 cm (13 in to 16 in)









