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It doesn't block sound or make you feel isolated
you still hear everything clearly
Calmer Performance maximises brain function and minimises distractions
and experience our ground-breaking audio in a completely new way
Calmer® Filters Earplugs It doesn't block sound orCalmer filters feature two sound reduction strengths and are compatible with Calmer and Calmer Kids (standard and mini size). Simply insert your preferred filter strength into Calmer for quieter calming sound. Calmer Filters are compatible with Calmer and Calmer Kids.
