no pressure

transforming your shoe comfort

the wool felt layer and PU bottom adheres firmly to the soles

lessen the impact of each step

-BALANCED ARCH DESIGN FOR SPORTS: The contoured TPU arch brace aligns with your foot's natural curve

UNIWA Electronic Whistles, 2 Pack Handheld 3 Tone High Volume Electric Whistle… Keen Utility no pressureA practical whistle or safety gear for outdoor work and recreation. Chosen from Amazon's better selling, well reviewed options in this category. 3 Tones Electronic WhistlesElectronic whistle can avoid mouth contact. Straightforward to use and easy to pack with the rest of your kit.