Described herein is a biometric sensor package. In particular, a biometric sensor package for integration with a garment. Furthermore, methods of manufacturing of such biometric sensor packages are disclosed. Still yet, methods of integrating biometric sensor packages in to garments are disclosed. The biometric sensor packages described herein can easily be manufactured by current biometric sensor manufactures, for example heart rate monitor belt manufacturers. The biometric sensor packages described here can then be easily integrated in to garments by current garment manufacturers without requiring any special knowledge or tooling relating to the actual biometric sensor arrangements within the biometric sensor packages. Through the use of biometric sensor packages described herein biometric sensor arrangements, such as heart rate monitors and EEG sensors can be easily integrated into garments, such as sports bras, shirts and shorts, without disrupting existing supply chains and factories.