The tzumi Sound Guards are the best earmuffs for noise isolation while working in noisy environments, and the additional Bluetooth and AUX compatibility allows you to enjoy music or answer calls. Super comfortable for a whole day’s use, lightweight at just 10.3 oz., and OSHA compliant, they provide peace of mind and the highest safety standards. Block most noise while wearing the tzumi Sound Guards or be part of the conversation with the breakthrough transparency mode feature.